Metallurgical and Materials Transactions A最新文献

筛选
英文 中文
Elucidating Inclusion-Induced Microstructural Responses of EH36 Shipbuilding Steels with Varied Ti Contents 阐明不同钛含量的 EH36 造船钢的夹杂物诱导微结构反应
Metallurgical and Materials Transactions A Pub Date : 2024-07-03 DOI: 10.1007/s11661-024-07495-5
Junjie Ma, Ming Zhong, Mingyang Cao, Xiaobo Yuan, Imants Kaldre, Cong Wang
{"title":"Elucidating Inclusion-Induced Microstructural Responses of EH36 Shipbuilding Steels with Varied Ti Contents","authors":"Junjie Ma, Ming Zhong, Mingyang Cao, Xiaobo Yuan, Imants Kaldre, Cong Wang","doi":"10.1007/s11661-024-07495-5","DOIUrl":"https://doi.org/10.1007/s11661-024-07495-5","url":null,"abstract":"<p>EH36 shipbuilding steels with varied Ti contents have been designed to investigate the roles of Ti upon inclusion evolution and microstructural characteristics. As the Ti content increases, the number density of Ti-containing inclusions appreciably multiplies, and corresponding area fraction of acicular ferrite boosts sharply from 5.0 to 29.9 pct. Additionally, through <i>in-situ</i> confocal scanning laser microscopy, it is clarified that acicular ferrite start temperature has been elevated, thanks to the population of Ti-containing inclusions.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Liquefaction Characteristics and Cracking Behavior of the Grain Boundaries and Interdendritic Regions in Non-Weldable K447A Superalloy During Laser Re-Melting 激光再熔炼过程中不可焊接 K447A 超合金晶界和树枝状晶间区域的液化特征和裂纹行为
Metallurgical and Materials Transactions A Pub Date : 2024-07-03 DOI: 10.1007/s11661-024-07484-8
Qi Wei, Shangzhe Du, Pulin Nie, Chengwu Yao, Jian Huang
{"title":"Liquefaction Characteristics and Cracking Behavior of the Grain Boundaries and Interdendritic Regions in Non-Weldable K447A Superalloy During Laser Re-Melting","authors":"Qi Wei, Shangzhe Du, Pulin Nie, Chengwu Yao, Jian Huang","doi":"10.1007/s11661-024-07484-8","DOIUrl":"https://doi.org/10.1007/s11661-024-07484-8","url":null,"abstract":"<p>Nickel-based superalloys with high Al + Ti content are considered non-weldable, and hot cracking is a major challenge in their thermal fabrication processes. In this study, the microstructure liquefaction characteristics and liquation cracking behavior of laser-remelted as-cast K447A superalloy have been investigated. In the heat-affected zone (HAZ), the special liquefaction phenomenon of the coarse script carbides consists of cracking, breakdown, and liquefaction successively. The whole liquefaction sequence observed in the as-cast K447A substrate encompasses: IMRs (Ni<sub>7</sub>Hf<sub>2</sub>-γ + γ–γ′ + M<sub>5</sub>B<sub>3</sub>-γ), primary γ′, MC-γ, matrix γ, and MC phases. Liquefaction of IMRs during the laser thermal cycle easily forms a continuous liquid film and evolves into liquation cracking. In the remelted zone (RZ), the fine MC particles and IMRs just form isolated liquefaction points. These isolated liquefaction points are interconnected due to micro-cracks generated by thermal stresses and solidification shrinkage stresses. Finally, crack-free remelted specimens have been obtained by process optimization and preheating the substrate. The tensile strength and elongation of the RZ are increased by 32 and 227 pct, which is beneficial for the RZ acting as a buffer layer to relax or inhibit the stress and cracks generated by subsequent additive repair of K447A.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Undercooling and Cracking During Solidification 凝固过程中的过冷和裂纹
Metallurgical and Materials Transactions A Pub Date : 2024-07-02 DOI: 10.1007/s11661-024-07486-6
Soumyadeep Dasgupta, Sindo Kou
{"title":"Undercooling and Cracking During Solidification","authors":"Soumyadeep Dasgupta, Sindo Kou","doi":"10.1007/s11661-024-07486-6","DOIUrl":"https://doi.org/10.1007/s11661-024-07486-6","url":null,"abstract":"<p>How the solid fraction <i>f</i><sub><i>S</i></sub> increases with decreasing temperature <i>T</i> during solidification, <i>i.e</i>., the <i>f</i><sub><i>S</i></sub>(<i>T</i>) of an alloy, can play a critical role in its susceptibility to cracking during solidification as demonstrated by various models of solidification cracking. In the present study the classic analytical modeling of microsegregation during rapid solidification was used to calculate <i>f</i><sub><i>S</i></sub>(<i>T</i>) using Al–Cu alloys as an example. The present study showed significant undercooling can occur during fast cooling and affect <i>f</i><sub><i>S</i></sub>(<i>T</i>) significantly. For the purpose of illustration, |d<i>T</i>/d(<i>f</i><sub><i>S</i></sub>)<sup>1/2</sup>| near (<i>f</i><sub><i>S</i></sub>)<sup>1/2</sup> = 1 was used in the present study as a simple index for the susceptibility to solidification cracking. The <i>f</i><sub><i>S</i></sub>(<i>T</i>) calculated by any solidification model (<i>e.g</i>., the present analytical model or a phase-field model with undercooling, or the Scheil–Gulliver model without undercooling) can be used to calculate the curve of <i>T</i> <i>vs</i> (<i>f</i><sub><i>S</i></sub>)<sup>1/2</sup> and hence the index. The present study showed undercooling can increase the index and hence the cracking susceptibility significantly. It can also change the composition most susceptible to solidification cracking.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141531730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Novel Method to Deposit Vanadium Carbide Interlayer on Tool Steel Substrate Applied to Mitigate CVD Diamond Thermal Stresses 在工具钢基底上沉积碳化钒中间膜以减缓 CVD 金刚石热应力的新方法
Metallurgical and Materials Transactions A Pub Date : 2024-07-02 DOI: 10.1007/s11661-024-07491-9
D. D. Damm, R. M. Volu, R. F. B. O. Correia, K. F. Almeida, V. J. Trava-Airoldi, G. de Vasconcelos, D. M. Barquete, E. J. Corat
{"title":"A Novel Method to Deposit Vanadium Carbide Interlayer on Tool Steel Substrate Applied to Mitigate CVD Diamond Thermal Stresses","authors":"D. D. Damm, R. M. Volu, R. F. B. O. Correia, K. F. Almeida, V. J. Trava-Airoldi, G. de Vasconcelos, D. M. Barquete, E. J. Corat","doi":"10.1007/s11661-024-07491-9","DOIUrl":"https://doi.org/10.1007/s11661-024-07491-9","url":null,"abstract":"<p>This work shows considerable advance in combining the exceptional properties of chemical vapor deposition (CVD) diamond with the toughness of steel, a subject that has been sought since the early 1990s. Combining both the previously developed techniques for vanadium carbide (VC) deposition, namely laser cladding vanadium carbide (LCVC) and thermo-reactive deposition (TRD) in a salt bath, made it possible to achieve the deposition of a CVD diamond film on a D6 tool steel, with a very low stress level of 1.8 ± 0.1 GPa. This was the lowest value for growth at 750 °C substrate temperature. The LCVC step was a fast processing to thicken the VC layer, while the short-term TRD (only 1 hour) closed the cracks left in the LCVC coating, relieved the residual stresses resulting from the rapid solidification after the laser incidence, and promoted a phase transformation from V<sub>8</sub>C<sub>7</sub> to V<sub>6</sub>C<sub>5</sub>, a phase with lower thermal expansion coefficient. Hot Filament Chemical Vapor Deposition (HFCVD) was used to perform the CVD diamond deposition. The vanadium carbide layer has been an intermediate layer capable of acting as an excellent diffusion barrier and able to satisfactorily mitigate the thermal stress of the CVD diamond. The samples were characterized by Scanning Electron Microscopy with Field Emission Gun (FEG-SEM) equipped with Energy-Dispersive X-ray Spectroscopy (EDS), X-ray diffractometry, Rockwell A (588.6 N) indentation tester. Raman spectroscopy was used to further characterize HFCVD diamond, to compute the thermal compressive stress.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solid State Reduction Driven Synthesis of Mn Containing Multi-principal Component Alloys 固态还原驱动的含锰多主成分合金合成
Metallurgical and Materials Transactions A Pub Date : 2024-07-02 DOI: 10.1007/s11661-024-07490-w
Wookyung Jin, Prince Sharma, Prashant Singh, Animesh Kundu, Ganesh Balasubramanian, Helen M. Chan
{"title":"Solid State Reduction Driven Synthesis of Mn Containing Multi-principal Component Alloys","authors":"Wookyung Jin, Prince Sharma, Prashant Singh, Animesh Kundu, Ganesh Balasubramanian, Helen M. Chan","doi":"10.1007/s11661-024-07490-w","DOIUrl":"https://doi.org/10.1007/s11661-024-07490-w","url":null,"abstract":"<p>In recent years, high entropy alloys (HEAs), also known as multi-principal component alloys (MPCAs) have emerged as a new and exciting class of materials. This paper reports on the solid state reduction synthesis of a series of CoFeNiMn-based MPCA compositions, starting from a mixture of the corresponding oxides. One of the aims of the study was to test whether the degree of reduction of MnO, a highly stable oxide, could be enhanced by tailoring the alloy composition. Specifically, the influence of Ni content was studied because Ni exhibits a significant negative enthalpy of mixing with Mn. High purity precursor powders of Co(OH)<sub>2</sub>, Fe<sub>2</sub>O<sub>3</sub>, MnO<sub>2</sub>, and NiO were milled and mixed using standard ceramic processing methods. The nominal sample compositions (assuming complete oxide reduction) were (CoFeMn)<sub><i>x</i></sub>Ni<sub>(1−<i>x</i>)</sub>, for <i>x</i> = 0, 0.083, 0.166, and 0.25. The oxide samples were subjected to a series of isothermal reduction anneals in flowing 3 pct H<sub>2</sub>–Ar at 1100 °C. The resulting microstructures were characterized using scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The composition of the resulting MPCAs was determined quantitatively using wavelength dispersive spectroscopy (WDS) in the electron microprobe. The study revealed that for each of the initial oxide compositions studied, it was possible to achieve an <i>MPCA</i> with ~ 25 at. pct Mn. These results were found to be consistent with the predictions of a thermodynamic model whereby a negative enthalpy of mixing (Δ<i>H</i><sub>mix</sub>), combined with a contribution from configurational entropy, can offset a positive free energy of reduction (Δ<i>G</i><sub>red</sub>). The incorporation of vibrational entropy into first principles calculations was found to have a significant effect on the predicted crystal structure of the MPCAs.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Residual Stress Measurement of Laser Powder Bed Fusion Additively Manufactured Hastelloy-X Through Crystal Plasticity Simulations and Neutron Diffraction Experiments 通过晶体塑性模拟和中子衍射实验测量激光粉末床熔融快速成型哈斯特洛伊-X 的残余应力
Metallurgical and Materials Transactions A Pub Date : 2024-07-01 DOI: 10.1007/s11661-024-07474-w
Amirhosein Mozafari, Ali Bonakdar, Joe Kelleher, Hamidreza Abdolvand
{"title":"Residual Stress Measurement of Laser Powder Bed Fusion Additively Manufactured Hastelloy-X Through Crystal Plasticity Simulations and Neutron Diffraction Experiments","authors":"Amirhosein Mozafari, Ali Bonakdar, Joe Kelleher, Hamidreza Abdolvand","doi":"10.1007/s11661-024-07474-w","DOIUrl":"https://doi.org/10.1007/s11661-024-07474-w","url":null,"abstract":"<p>The laser powder bed fusion additive manufacturing (LPBF-AM) technique enables the production of near-net-shaped metal components, but the concentrated heat input employed during manufacturing leads to the development of significant internal residual stresses. These residual stresses may cause considerable issues such as distortion, crack initiation during fabrication, and premature failure during service. In this study, neutron diffraction experiments were performed on a nickel-based superalloy, Hastelloy-X, to evaluate the state of residual stresses below and near the surface of as-built specimens as a function of LPBF-AM core process parameters. In addition, a crystal plasticity method was used to determine the diffraction elastic constants to provide a better estimation of residual stresses for textured specimens. The results indicate large tensile residual stresses of about 660 MPa along the scanning direction, counterbalanced by compressive ones below the surface. It is shown that internal and surface residual stresses increase with the laser specific energy. The use of various diffraction peaks for determining residual stresses is discussed and it is shown that while trends do not change, the magnitudes of measured stresses vary.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"240 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Superconductivity in a New High-Entropy Alloy (NbTi) $$_{0.67}$$ (MoHfV) $$_{0.33}$$ 新型高熵合金(NbTi)$_{0.67}$$(MoHfV)$_{0.33}$$的超导性
Metallurgical and Materials Transactions A Pub Date : 2024-07-01 DOI: 10.1007/s11661-024-07488-4
Wojciech Nowak, Bartosz Rusin, Michał Babij, Rafał Topolnicki, Tomasz Ossowski, Adam Pikul, Rafał Idczak
{"title":"Superconductivity in a New High-Entropy Alloy (NbTi) $$_{0.67}$$ (MoHfV) $$_{0.33}$$","authors":"Wojciech Nowak, Bartosz Rusin, Michał Babij, Rafał Topolnicki, Tomasz Ossowski, Adam Pikul, Rafał Idczak","doi":"10.1007/s11661-024-07488-4","DOIUrl":"https://doi.org/10.1007/s11661-024-07488-4","url":null,"abstract":"<p>The structural and superconducting properties of a new niobium- and titanium-rich high-entropy alloy (NbTi)<span>(_{text {0.67}})</span>(MoHfV)<span>(_{text {0.33}})</span> were determined. The alloy was synthesized by arc melting and its physical properties were characterized by means of X-ray powder diffraction, energy dispersive X-ray spectroscopy, magnetization, electrical resistivity and specific heat measurements. Experimental data revealed that the (NbTi)<span>(_{text {0.67}})</span>(MoHfV)<span>(_{text {0.33}})</span> crystalizes in body-centered cubic structure and exhibits type-II superconductivity below about 5 K. In addition, electronic structure calculations were performed using the Density Functional Theory (DFT) method. Their results suggest that in case of HEAs, the influence of the local atomic configuration on their electronic structure in the energy region close to <i>E</i><span>(_{mathrm {text {F}}})</span> is rather small or even negligible.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Annealing Time on the Microstructure, Mechanical and Damping Properties of an As-Rolled ZK60 Alloy 退火时间对 As-Rolled ZK60 合金显微组织、机械和阻尼特性的影响
Metallurgical and Materials Transactions A Pub Date : 2024-07-01 DOI: 10.1007/s11661-024-07479-5
Huashen Liu, Youping Sun, Jiangmei He, Guojian Luo, Jiaxin Zhu
{"title":"Effect of Annealing Time on the Microstructure, Mechanical and Damping Properties of an As-Rolled ZK60 Alloy","authors":"Huashen Liu, Youping Sun, Jiangmei He, Guojian Luo, Jiaxin Zhu","doi":"10.1007/s11661-024-07479-5","DOIUrl":"https://doi.org/10.1007/s11661-024-07479-5","url":null,"abstract":"<p>The effects of different annealing times on the microstructure, mechanical and damping properties of a rolled state ZK60 alloy were investigated. The results show that with increasing annealing time, the degree of static recrystallization gradually increases, and the grains grow gradually. The grain orientation changes from the (0001) orientation to the (01-10) and (− 12-10) orientations, and the basal texture intensity of the alloy decreases gradually. The tensile and yield strengths decrease slightly, and the elongation increases gradually. Because of the gradual reduction in dislocation entanglement, the room temperature damping properties improve with annealing time, and the damping value Q<sup>−1</sup> at <i>ε</i><sub>0.01</sub> increases from 0.008 to 0.013. After annealing, the ZK60 alloy becomes a high-damping alloy (Q<sup>−1</sup> &gt; 0.01). The recrystallization damping peak is more intense than the background damping peak, and recrystallization damping peak P<sub>1</sub> becomes increasingly obvious. The peak value of damping peak P<sub>2</sub> gradually decreases in the temperature range of 270 °C &lt; T &lt; 290 °C, and the peak width slowly increases, which is characterized by grain boundary-type relaxation. These results indicate that annealing effectively maintains the high strength of the ZK60 alloy while improving its damping properties.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Vitro and In Vivo Degradation of the New Dissolvable Surgical Wire, Produced from Zn Based Low Alloy by Hot and Cold Drawing 用锌基低合金通过热拔和冷拔生产的新型可溶解手术线材的体外和体内降解情况
Metallurgical and Materials Transactions A Pub Date : 2024-07-01 DOI: 10.1007/s11661-024-07470-0
A. Milenin, P. Kustra, U. Lelek-Borkowska, M. Wróbel, M. Marzec, J. Sulej-Chojnacka, J. Półrolniczak, I. Polkowska, B. Nowicka
{"title":"In Vitro and In Vivo Degradation of the New Dissolvable Surgical Wire, Produced from Zn Based Low Alloy by Hot and Cold Drawing","authors":"A. Milenin, P. Kustra, U. Lelek-Borkowska, M. Wróbel, M. Marzec, J. Sulej-Chojnacka, J. Półrolniczak, I. Polkowska, B. Nowicka","doi":"10.1007/s11661-024-07470-0","DOIUrl":"https://doi.org/10.1007/s11661-024-07470-0","url":null,"abstract":"<p>The biocorrosion of a new surgical wire (0.6, 0.8, and 1.0 mm in diameter) obtained from a ZnMg0.004 alloy by hot and cold drawing was characterized using <i>in vitro</i> tests in a bovine animal serum solution and <i>in vivo</i> tests – through placement in the muscles of a rabbit and a in cat's broken paw. Corrosion gravimetric tests were carried out in a corrosive environment refreshed every 3 days and also one which remained unchanged throughout the test period. Electrochemical tests were performed in the same solution of serum as in gravimetric tests. Depending on the initial diameter, complete dissolution of the wire was observed after 36-78 days of immersion in periodically changed serum solution. None of the wires completely dissolved over 120 days in the unreplaced serum solution. The corrosion rate values determined in electrochemical and gravimetric tests were similar. After 90 days of <i>in vivo</i> tests, both in the body of the rabbit and the cat, the degradation of the wire was similar to <i>in vitro</i> tests in the unreplaced serum solution. No harmful effects were observed in the animals.</p>","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Significant Microstructure Refinement and Improved Mechanical Properties of Mg2Si/Al Composites Induced by Nanoscale TiB2 Particles 纳米级 TiB2 粒子诱导 Mg2Si/Al 复合材料显微结构细化并改善力学性能
Metallurgical and Materials Transactions A Pub Date : 2024-07-01 DOI: 10.1007/s11661-024-07487-5
Peng Xiao, Qiqiang Zhao, Wenyu Wu
{"title":"Significant Microstructure Refinement and Improved Mechanical Properties of Mg2Si/Al Composites Induced by Nanoscale TiB2 Particles","authors":"Peng Xiao, Qiqiang Zhao, Wenyu Wu","doi":"10.1007/s11661-024-07487-5","DOIUrl":"https://doi.org/10.1007/s11661-024-07487-5","url":null,"abstract":"<p>Aluminum matrix composite have shown the great prospects in improving service performance and life of high-end equipment under harsh conditions due to lightweight and high specific strength. However, the presence of coarse Mg<sub>2</sub>Si phase with undesired morphology in Mg<sub>2</sub>Si/Al composites limits their engineering application. This study proposes a strategy of TiB<sub>2</sub> ceramic particles regulating the morphology and size of Mg<sub>2</sub>Si to strengthen the aluminum matrix composites by incorporating dual-scale hybrid reinforcements of Mg<sub>2</sub>Si and TiB<sub>2</sub>. The TiB<sub>2</sub> particles were introduced into the Al-15 wt pct Mg<sub>2</sub>Si composite by a master alloy method, and the influence of TiB<sub>2</sub> particles on the morphology and size of Mg<sub>2</sub>Si, and Al grains of composites were investigated. The results demonstrate that 3 wt pct TiB<sub>2</sub> particles can refine the primary Mg<sub>2</sub>Si from 14.6 to 10.4 μm, resulting in a more regular morphology. Additionally, the eutectic Mg<sub>2</sub>Si transforms from a long and slender Chinese character shape to a short rod shape, reducing the aspect ratio by 65.9 pct from 10.9 to 3.7. During the solidification process, TiB<sub>2</sub> particles promote the heterogeneous nucleation of primary Mg<sub>2</sub>Si phases and impede the growth, leading to significant refinement. However, the improved morphology of eutectic Mg<sub>2</sub>Si is mainly attributed to the inhibited preferential growth due to the formation of a nanoparticle layer, with no observed heterogeneous nucleation of TiB<sub>2</sub>. Moreover, TiB<sub>2</sub> particles significantly refine the grain size of Al from 212.7 to 70.8 μm. The addition of 3 wt pct TiB<sub>2</sub> greatly improves the strength of the composites from 302 to 373 MPa, without losing ductility. After T6 heat treatment, Al-15 wt pct Mg<sub>2</sub>Si composites exhibit simultaneous improvement in the strength and ductility. Compared with composites without TiB<sub>2</sub> particles (361 MPa and 32 pct), Al-15Mg<sub>2</sub>Si-3TiB<sub>2</sub> composites have more superior strength–ductility combination of 434 MPa and 35 pct due to the significant modification of Mg<sub>2</sub>Si phase, grain refinement, and Orowan strengthening.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":18504,"journal":{"name":"Metallurgical and Materials Transactions A","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信