Metals and Materials International最新文献_第6页

Dynamic Deformation Mechanism Transformation and Constitutive Equation Modification of ZEK610 Alloy ZEK610 合金的动态变形机理转换和构造方程修正

IF 3.5 3区材料科学

Metals and Materials International Pub Date : 2024-08-01 DOI: 10.1007/s12540-024-01741-6

Chenkun Xu, Le Zhou, Zhi Wang, Feng Wang, Weihan Zhang, Ziqi Wei, Pingli Mao

{"title":"Dynamic Deformation Mechanism Transformation and Constitutive Equation Modification of ZEK610 Alloy","authors":"Chenkun Xu, Le Zhou, Zhi Wang, Feng Wang, Weihan Zhang, Ziqi Wei, Pingli Mao","doi":"10.1007/s12540-024-01741-6","DOIUrl":"https://doi.org/10.1007/s12540-024-01741-6","url":null,"abstract":"<p>The hot extrusion shear technique was employed to fabricate the Mg-6Zn-1Ce-0.6Zr (ZEK610) alloy, primarily composed of α-Mg matrix, Mg<sub>7</sub>Zn<sub>3</sub> phase, and (Mg<sub>1 − x</sub>Zn<sub>x</sub>) <sub>11</sub>Ce phase. Dynamic compression experiments at various strain rates were conducted on the alloy. The alloy exhibits a typical positive strain strengthening effect, with the yield strength and peak stress reaching 243Mp and 622Mp at 2500s<sup>− 1</sup> strain rate. The dominant deformation mechanism of the alloy transforms from {10<span>(stackrel{-}{1})</span>2} tensile twining to prismatic slip as the strain rate increases. This phenomenon is attributed to the increased sensitivity of both the absorbed energy density and the adiabatic temperature to strain rate increments. After modifying the Johnson-Cook constitutive model, it was possible to more accurately predict the dynamic compression properties of the alloy at room temperature, as the curves derived from the modified equations closely matched the experimental curves.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"41 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-Situ Observation Combined with Numerical Simulation of the Solidification and Subsequent Cooling Process for Hot Stamping Steel 热冲压钢凝固和后续冷却过程的现场观察与数值模拟相结合

IF 3.5 3区材料科学

Metals and Materials International Pub Date : 2024-08-01 DOI: 10.1007/s12540-024-01739-0

Jingzhou Lu, Jiaxi Chen, Weiming Pan, Wanlin Wang, Kun Dou

{"title":"In-Situ Observation Combined with Numerical Simulation of the Solidification and Subsequent Cooling Process for Hot Stamping Steel","authors":"Jingzhou Lu, Jiaxi Chen, Weiming Pan, Wanlin Wang, Kun Dou","doi":"10.1007/s12540-024-01739-0","DOIUrl":"https://doi.org/10.1007/s12540-024-01739-0","url":null,"abstract":"<p>In this study, the solidification and subsequent cooling processes of hot stamping steel during thin slab casting have been investigated using high-temperature confocal in-situ observation experiments and finite element numerical simulations based on the calculation results of phase evolution diagrams. The numerical simulation results reveal that different regions of the cast slab exhibited varying solidification times/cooling rates, with the longest solidification time occurring at the center of the slab, approximately 77.5 s, and the shortest at the corners, around 2.1 s. Considering these findings, in-situ observation experiments have been conducted under cooling rates of 10, 50, 150, and 1000 °C/min, revealing that both solidification and solid-state transformation events are delayed with increasing cooling rates. Notably, under higher cooling rates, the peritectic reaction process exhibit blocky transformation. Based on the findings, this study establishes relationships between the ferrite growth rate/secondary dendrite arm spacing and cooling rate for hot stamping steel. Additionally, potential optimization strategies for continuous casting and secondary cooling process parameters are suggested to enhance the sophistication of thin slab production processes. These optimization methodologies are informed by guiding experiments conducted in conjunction with numerical simulations, ultimately facilitating the optimization of practical production practices.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"48 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Selective Laser Melting of Stainless Steels: A Review of Process, Microstructure and Properties 更正：不锈钢的选择性激光熔化：工艺、微观结构和性能综述

IF 3.3 3区材料科学

Metals and Materials International Pub Date : 2024-07-27 DOI: 10.1007/s12540-024-01760-3

A. Mansoura, N. Omidi, N. Barka, Sasan Sattarpanah Karganroudi, S. Dehghan

引用次数: 0

Dendrite Fragmentation Behavior and Mechanism during the Solidification of GH4742 Superalloy under Permanent Magnetic Stirring 永磁搅拌下 GH4742 超合金凝固过程中的枝晶碎裂行为和机理

IF 3.5 3区材料科学

Metals and Materials International Pub Date : 2024-07-23 DOI: 10.1007/s12540-024-01734-5

Jiahui Wang, Lei Wang, Xiu Song, Yang Liu

{"title":"Dendrite Fragmentation Behavior and Mechanism during the Solidification of GH4742 Superalloy under Permanent Magnetic Stirring","authors":"Jiahui Wang, Lei Wang, Xiu Song, Yang Liu","doi":"10.1007/s12540-024-01734-5","DOIUrl":"https://doi.org/10.1007/s12540-024-01734-5","url":null,"abstract":"<p>The effects of permanent magnetic stirring (PMS) on the dendrite fragmentation behavior during the solidification of GH4742 superalloy were in situ investigated and the mechanism was also discussed. The results reveal that the columnar zone size is remarkably reduced with the PMS, because the fragment number at the columnar front increases, resulting in inhibiting the growth of columnar grains. But the columnar zone size shows no significant changing with the increasing PMS rotation speed from 100 to 300 rpm, which is ascribed to the following two aspects. On one hand, the fragment movement is greatly accelerated under the forced melt flow generated by PMS, and the penetration of forced melt flow in the mushy zone has been promoted with the increasing PMS rotation speed. On the other hand, the fragment size gradually increases with the increasing PMS rotation speed, so the fragment number transported to the columnar front by the forced melt flow is almost the similar. Based on the in-situ experiment and theoretical analysis, the dendrite fragmentation during the solidification of GH4742 superalloy is attributed to the remelting of dendrite arm necks because of the local enrichment of Nb, which decreases the equilibrium interface temperature and induces remelting when the superheating exceeds a critical value of 2.8 ℃.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"63 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of Microstructure, Texture and Mechanical Properties of ECAP-Processed ZK60 Magnesium Alloy ECAP 加工 ZK60 镁合金的显微组织、纹理和力学性能的演变

IF 3.5 3区材料科学

Metals and Materials International Pub Date : 2024-07-23 DOI: 10.1007/s12540-024-01730-9

Iraj Khoubrou, Bahram Nami, Seyyed Mehdi Miresmaeili, Milad Yazdani

{"title":"Evolution of Microstructure, Texture and Mechanical Properties of ECAP-Processed ZK60 Magnesium Alloy","authors":"Iraj Khoubrou, Bahram Nami, Seyyed Mehdi Miresmaeili, Milad Yazdani","doi":"10.1007/s12540-024-01730-9","DOIUrl":"https://doi.org/10.1007/s12540-024-01730-9","url":null,"abstract":"<p>In this work, the influence of equal channel angular pressing (ECAP) on the microstructure, texture, and mechanical properties of ZK60 Mg alloy was investigated. The deformation process by equal channel angular pressing has been performed at the three temperatures of 588, 628, and 668 K and different ECAP pass numbers up to 4. The microstructural evolution was investigated using an optical microscope (OM), scanning electron microscope (SEM) equipped with an EDS detector, and X-ray diffraction (XRD) analyses. After the ECAP process, the microstructure of the cast alloy with an average grain size of about 208 μm converted to the bimodal grain structure. The fractions of fine grains increase and their size decreases with the increasing ECAP pass number and the decreasing deformation processing temperature. The results show that the ECAP process improves the mechanical properties at room temperature and weakens them at high temperatures. In addition, enhancement of the deformation severity through increasing the number of ECAP passes and decreasing the ECAP temperature led to an increase in the hardness of the alloy at room temperature and a decrease in its creep resistance at high temperatures.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"63 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141784998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Impact of Co on Thermal Aging in Sn58Bi/Cu Solder Joints: IMC Growth and Transformation in Mechanical Properties 更正：钴对 Sn58Bi/Cu 焊点热老化的影响：IMC 生长和机械性能变化

IF 3.3 3区材料科学

Metals and Materials International Pub Date : 2024-07-13 DOI: 10.1007/s12540-024-01747-0

Xi Huang, Liang Zhang, Li-bin Rao, Lei Sun

引用次数: 0

Enhancement of Microstructural and Tensile Isotropy for Ti–6Al–4V and Ti–6Al–2Sn–2Zr–2Mo–2Cr Alloys Deposited with Wire Arc Additive Manufacturing and Interlayer Peening 利用线弧增材制造和层间强化沉积的 Ti-6Al-4V 和 Ti-6Al-2Sn-2Zr-2Mo-2Cr 合金的微观结构和拉伸各向同性的增强

IF 3.5 3区材料科学

Metals and Materials International Pub Date : 2024-07-13 DOI: 10.1007/s12540-024-01735-4

Sungwon Hwang, Guo Xian, Donghyeon Choi, Jimin Nam, Sang Myung Cho, Jong-Taek Yeom, Namhyun Kang

{"title":"Enhancement of Microstructural and Tensile Isotropy for Ti–6Al–4V and Ti–6Al–2Sn–2Zr–2Mo–2Cr Alloys Deposited with Wire Arc Additive Manufacturing and Interlayer Peening","authors":"Sungwon Hwang, Guo Xian, Donghyeon Choi, Jimin Nam, Sang Myung Cho, Jong-Taek Yeom, Namhyun Kang","doi":"10.1007/s12540-024-01735-4","DOIUrl":"https://doi.org/10.1007/s12540-024-01735-4","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The wire arc additive manufacturing (WAAM) deposition of Ti–6Al–4V (Ti64) and Ti–6Al–2Sn–2Zr–2Mo–2Cr (Ti62222) alloys produce long columnar grains, indicating tensile anisotropy in various directions. Therefore, this study applied interlayer peening (ILP) during WAAM to modify the solidification morphology. The index of plane anisotropy (IPA) of the as-built Ti64 deposit was 30%, whereas that of the ILP Ti64 alloy was 1%, indicating the significant effect on modifying the solidification morphology and reducing the IPA of the Ti64 deposit. However, the IPA of the as-built Ti62222 alloy was 79%, whereas that of the ILP Ti62222 alloy was 72%, indicating anisotropy in the mechanical properties despite the ILP process. In Ti64 alloy, ILP resulted in larger D<sub>ILP</sub> (3.2 mm) than D<sub>remelt</sub> (1.87 mm), which impeded the growth of columnar β grains and nucleated the equiaxed β grains during subsequent layer deposition. However, in Ti62222 alloy, owing to its higher hardness and Yield Strength, D<sub>ILP</sub> (2.2 mm) and D<sub>remelt</sub> (1.97 mm) were approximately the same, thus allowing the growth of columnar β grains to continue during subsequent layer deposition.</p><h3 data-test=\"abstract-sub-heading\">Graphic Abstract</h3>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"328 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics and Formation Mechanism of Ca–Mg–Al–Si–O + (Ca,Mn)S Duplex Inclusions in Ca–S Free-Cutting Steel Ca-S 易切削钢中 Ca-Mg-Al-Si-O + (Ca,Mn)S双相夹杂物的特征和形成机理

IF 3.5 3区材料科学

Metals and Materials International Pub Date : 2024-07-13 DOI: 10.1007/s12540-024-01733-6

Yao Li, Guoguang Cheng, Jinlong Lu, Hu Long

{"title":"Characteristics and Formation Mechanism of Ca–Mg–Al–Si–O + (Ca,Mn)S Duplex Inclusions in Ca–S Free-Cutting Steel","authors":"Yao Li, Guoguang Cheng, Jinlong Lu, Hu Long","doi":"10.1007/s12540-024-01733-6","DOIUrl":"https://doi.org/10.1007/s12540-024-01733-6","url":null,"abstract":"<p>Large numbers of long strip-shaped pure MnS inclusions in steel will result in anisotropy of mechanical properties. To obtain more duplex (Ca,Mn)S inclusions in steel through adding Ca can decrease the proportion of long strip-shaped pure MnS inclusions, and anisotropy of mechanical properties can be reduced. In this paper, based on three heats of Ca–S free cutting steel with Al content under 0.01%, the characteristics and formation of Ca–Mg–Al–Si–O + (Ca,Mn)S duplex inclusions in bars were analyzed. The results indicate these duplex inclusions can be classified as four types, named as “Type-C”, “TypeMC-H”, “TypeMC-L”, and “Type-M”, respectively. For Type-C, although they behave spherical, CaS is enriched in (Ca,Mn)S and CaO is enriched in core oxides. For TypeMC-H, CaS content in (Ca,Mn)S is appropriate, they behave spindle-shaped, but CaO content in core oxides closes to Type-C. The formation of Type-C or TypeMC-H consumes lots of Ca element, which makes the overall number of duplex inclusions decrease. For TypeMC-L, their compositions and shapes are both appropriate. For Type-M, although they have higher aspect ratios, their formation can reduce the formation of pure MnS inclusions and improve the distribution of sulfides. Under the condition with specific Ca/S ratio in steel, to obtain more duplex (Ca,Mn)S inclusions for reducing anisotropy of mechanical properties, numbers of Type-C and TypeMC-H should be decreased, and numbers of TypeMC-L and Type-M should be increased. The key is to make SiO<sub>2</sub> content in RH-end oxides as lower as possible, and Al content in steel should be controlled not less than 0.007%.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"57 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of Grain Boundary Strength on Yielding Behavior and Uniaxial Tensile Properties in Ferritic Steels 晶界强度对铁素体钢屈服行为和单轴拉伸性能的影响

IF 3.5 3区材料科学

Metals and Materials International Pub Date : 2024-07-11 DOI: 10.1007/s12540-024-01732-7

Byeong-Seok Jeong, Siwhan Lee, Jeongwon Yeh, Eun Soo Park, Heung Nam Han

{"title":"Role of Grain Boundary Strength on Yielding Behavior and Uniaxial Tensile Properties in Ferritic Steels","authors":"Byeong-Seok Jeong, Siwhan Lee, Jeongwon Yeh, Eun Soo Park, Heung Nam Han","doi":"10.1007/s12540-024-01732-7","DOIUrl":"https://doi.org/10.1007/s12540-024-01732-7","url":null,"abstract":"<p>The yield-point phenomenon in recrystallized ferritic steels is often associated with the dislocation multiplication mechanism, wherein the yield drop can be attributed to the lack of mobile dislocations in materials. However, the yield-point phenomenon is not consistently observed in all recrystallized ferritic steels, implying that the dislocation multiplication mechanism has constraints in delineating the yielding behavior of these materials. Therefore, in this study, we introduced grain boundary strength as a critical parameter for elucidating the yielding behavior of recrystallized ferritic steels. Three types of steels—interstitial-free (IF) steel, precipitation-hardened (PH) steel, and Mn-added interstitial-free (IF-2Mn) steel—were analyzed for grain boundary strength using nanoindentation, and the reliability of this methodology was verified by Hall–Petch analysis. The IF steel, which lacked the yield-point phenomenon, demonstrated a much lower grain boundary strength than the PH and IF-2Mn steels, where the phenomenon occurred. Microstructural analysis confirmed that the enhanced grain boundary strengths of the PH and IF-2Mn steels were due to carbon and manganese segregation at the grain boundaries, respectively. Further, the grain boundary strength significantly influenced the tensile properties and yielding behavior. In PH steels, the enhanced grain boundary strength increased the yield strength owing to Hall–Petch hardening; however, it also increased the resistance to plastic deformation propagation, resulting in reduced ductility. In the IF-2Mn steels, the two specimens with different grain sizes exhibited similar yield strengths, which could be attributed to differences in the grain boundary strength. Our findings have significant implications for the design and optimization of ferritic steels.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"9 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comprehensive Study on the Microstructural Characterization and Strengthening Mechanism of (α + β) Based Ti-6Al-7Nb Alloy Processed Via Mechanical Alloying and Spark Plasma Sintering 通过机械合金化和火花等离子烧结加工的 (α + β) 基 Ti-6Al-7Nb 合金的微结构表征和强化机理的综合研究

IF 3.5 3区材料科学

Metals and Materials International Pub Date : 2024-07-11 DOI: 10.1007/s12540-024-01731-8

S. Bharathi, R. Karunanithi, M. Prashanth, M. Kamaraj, S. Sivasankaran

{"title":"Comprehensive Study on the Microstructural Characterization and Strengthening Mechanism of (α + β) Based Ti-6Al-7Nb Alloy Processed Via Mechanical Alloying and Spark Plasma Sintering","authors":"S. Bharathi, R. Karunanithi, M. Prashanth, M. Kamaraj, S. Sivasankaran","doi":"10.1007/s12540-024-01731-8","DOIUrl":"https://doi.org/10.1007/s12540-024-01731-8","url":null,"abstract":"<p>This study investigates the severe plastic deformation of Ti–6Al–7Nb alloy synthesized through mechanical alloying (MA, 0–120 h) and subsequently processed via spark plasma sintering (SPS, 50 MPa, 1050 °C, 6 min). Advanced characterization techniques such as XRD, optical microscopy, HRSEM, HRTEM, EDAX, and EBSD analysis were employed to analyze the powder and consolidated specimens, focusing on the grain microstructure and formation mechanisms during MA and SPS. Mechanical properties were evaluated through micro-hardness, nano-indentation, and compression tests. The SPS 120 h sample exhibited a fine-grained microstructure dominated by the α-Ti phase, with needle-shaped minor β-Ti phases, while the SPS blended sample (0 h) displayed coarse-grained phases. Processing via MA and SPS significantly influenced the material, rendering it suitable for medical and dental applications. It is confirmed that the 120 h milled nanocrystallite sample demonstrated higher strength, with a micro-hardness of 760 VHN and compressive strength of 905 MPa, compared to the initial blended sample (0 h) with a coarse grain, which exhibited a micro-hardness of 120 VHN and compressive strength of 874 MPa. The influence of various strengthening mechanisms, such as grain boundary strengthening, solid solution strengthening, and dislocation strengthening, were elucidated and correlated with the total strength of the material.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"34 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0