Metals and Materials International最新文献

{"title":"Improvement of Joint Strength of TC4/AZ91D Bimetal in Solid-liquid Compound Casting Process Using Cu-Ni Composite Interlayer","authors":"Fulin Wen,&nbsp;Dengzhi Zheng,&nbsp;Jianhui Liu","doi":"10.1007/s12540-024-01748-z","DOIUrl":"10.1007/s12540-024-01748-z","url":null,"abstract":"<div><p>In the present study, the liquid-solid compound casting process has been developed for fabricating AZ91D/TC4 bimetal by adapting a Ni/Cu or Cu/Ni composite intermediate. The effects of interlayer sequence (Ni/Cu and Cu/Ni) on interface microstructure evolution and mechanical properties were investigated in detail. In particular, in order to promote inter-diffusion of Cu and Ti elements at the Cu/Ti interface or Ni and Ti elements at the Ni/Ti interface, the vacuum heat-treat method was adapted before the liquid-solid compound casting process. The results showed that both the Ni/Cu and Cu/Ni composite interlayer realized metallurgical bonding between TC4 and AZ91D. The interface reaction layers of the TC4/AZ91D bimetal using Cu/Ni composite interlayer were composed of Mg₂(Ni, Cu), Ni₂Mg₃Al, Cu(Ni) solid solution and Mg-Ni eutectic structure. However, the interface reaction layers of TC4/AZ91D bimetal using the Ni/Cu composite interlayer were mainly composed of Mg₂(Ni, Cu), (Al₃Ni + Ni₂Mg₃Al) and Ni-Ti phases. Nano-indentation tests show that Ni-Ti intermetallic compounds has the highest nano-hardness at interface region, which leading to a poor shear strength at interface. When using Cu/Ni composite interlayer, the TC4/AZ91D bimetal had the highest shear strength of 97 MPa.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 2","pages":"582 - 594"},"PeriodicalIF":3.3,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141880712","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}

{"title":"Microstructure Evolution and Strengthening Mechanism of Regenerated Brass Alloy under Fe-Mn Control during Cold Drawing","authors":"Xiang Li,&nbsp;Baozhong Ma,&nbsp;Chengyan Wang,&nbsp;Yongqiang Chen","doi":"10.1007/s12540-024-01754-1","DOIUrl":"10.1007/s12540-024-01754-1","url":null,"abstract":"<div><p>Fe from raw materials and processing are inevitably introduced in the direct regeneration process of brass alloys from scrap copper, which may significantly affect the cold working performance of regenerated brass. Developing regenerated brass alloys that can be used for cold drawing under large deformation amounts remains a challenge. In this paper, the regenerated brass alloy wire was prepared by the method of Fe-Mn in-situ control casting and hot extrusion. The plasticity of regenerated brass was significantly improved during cold drawing after Fe-Mn microalloying control. The direct single pass ultimate cold working rate can reach 42% and the yield strength, tensile strength, total elongation, and hardness were 635 MPa, 649 MPa, 3.5%, and 181.2HV, respectively. Cold drawing wires showed good torsional resistance. The evolution of microstructure and properties of regenerated brass during cold drawing was studied, and the strengthening mechanism was determined. Work hardening induced by dislocation strengthening is the dominant strengthening mechanism. In the cold drawing process, the <i>α</i> phase of the FCC structure and the <i>β</i> phase of the BCC structure form a good coordination between soft and hard domains. The accumulation of dislocation introduced in the cold drawing process, the synergistic effect of the sliding mechanism, and the nanotwin deformation mechanism ensure the ideal cold drawing performance of the regenerated brass.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 2","pages":"595 - 612"},"PeriodicalIF":3.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866386","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}

{"title":"Investigation of Microstructure and Mechanical Characteristics of Thin-walled Hastelloy C-276 Manufactured Through Pulsed-Arc Additive Manufacturing Technique","authors":"M. D. Barath Kumar,&nbsp;A. Abdul Bhasith,&nbsp;G. S. Vishaal Kumar,&nbsp;Y. Ridhushan,&nbsp;N. Arivazhagan,&nbsp;N. Babu,&nbsp;K. Sathish Kumar,&nbsp;M. Manikandan","doi":"10.1007/s12540-024-01750-5","DOIUrl":"10.1007/s12540-024-01750-5","url":null,"abstract":"<div><p>Metal additive manufacturing is a significant and advancing manufacturing process on a worldwide scale. Wire + arc additive manufacturing (WAAM) is a progressed and efficient technique for producing large-scale near net shaped products by adding layers of material. This study presents pulsed current WAAM of a Hastelloy C-276 thin-wall component. The thin wall’s metallurgical and mechanical properties were extensively investigated. This included examining samples from different travel and build orientations. The microstructures in different areas include of columnar, cellular, and equiaxed dendrites. The temperature distribution and rate of cooling may impact the structure of the layers. The scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy (EDS) investigation showed a high Ni content and low Mo and W in the dendritic core region (DCR). SEM and EDS examines on several areas showed no cracking in the thin wall’s travel and build orientations. In addition, the electron backscattered diffraction (EBSD) investigation showed that the average grain size was 66.38 μm in the (x-y) plane and 113.18 μm in the (y-z) plane. Reheating and solidification during layer-by-layer deposition altered grain characteristics. The hardness measurements exhibited variability across several locations. The existence of a well-defined directed dendritic microstructure, coupled with the presence of precipitates, provides corroborating evidence. The material has a maximum average ultimate tensile strength of 786 ± 6.1 MPa and elongation of 65.3 ± 3%. The fracture features are primarily ductile with periodic transgranular and intergranular behaviour. The pulsed current arc-based WAAM process offers a new and innovative method of depositing Hastelloy C-276. This method is applicable in chemical, nuclear, marine, and industrial sectors.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 2","pages":"489 - 507"},"PeriodicalIF":3.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141866388","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}

{"title":"Dynamic Deformation Mechanism Transformation and Constitutive Equation Modification of ZEK610 Alloy","authors":"Chenkun Xu,&nbsp;Le Zhou,&nbsp;Zhi Wang,&nbsp;Feng Wang,&nbsp;Weihan Zhang,&nbsp;Ziqi Wei,&nbsp;Pingli Mao","doi":"10.1007/s12540-024-01741-6","DOIUrl":"10.1007/s12540-024-01741-6","url":null,"abstract":"<div><p>The hot extrusion shear technique was employed to fabricate the Mg-6Zn-1Ce-0.6Zr (ZEK610) alloy, primarily composed of α-Mg matrix, Mg₇Zn₃ phase, and (Mg_1 − xZn_x) ₁₁Ce 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^− 1 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>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 1","pages":"153 - 166"},"PeriodicalIF":3.3,"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}

{"title":"In-Situ Observation Combined with Numerical Simulation of the Solidification and Subsequent Cooling Process for Hot Stamping Steel","authors":"Jingzhou Lu,&nbsp;Jiaxi Chen,&nbsp;Weiming Pan,&nbsp;Wanlin Wang,&nbsp;Kun Dou","doi":"10.1007/s12540-024-01739-0","DOIUrl":"10.1007/s12540-024-01739-0","url":null,"abstract":"<div><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>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 1","pages":"100 - 114"},"PeriodicalIF":3.3,"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}

{"title":"Correction: Selective Laser Melting of Stainless Steels: A Review of Process, Microstructure and Properties","authors":"A. Mansoura,&nbsp;N. Omidi,&nbsp;N. Barka,&nbsp;Sasan Sattarpanah Karganroudi,&nbsp;S. Dehghan","doi":"10.1007/s12540-024-01760-3","DOIUrl":"10.1007/s12540-024-01760-3","url":null,"abstract":"","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"30 9","pages":"2372 - 2372"},"PeriodicalIF":3.3,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141798456","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}

{"title":"Dendrite Fragmentation Behavior and Mechanism during the Solidification of GH4742 Superalloy under Permanent Magnetic Stirring","authors":"Jiahui Wang,&nbsp;Lei Wang,&nbsp;Xiu Song,&nbsp;Yang Liu","doi":"10.1007/s12540-024-01734-5","DOIUrl":"10.1007/s12540-024-01734-5","url":null,"abstract":"<div><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>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 1","pages":"237 - 247"},"PeriodicalIF":3.3,"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}

{"title":"Evolution of Microstructure, Texture and Mechanical Properties of ECAP-Processed ZK60 Magnesium Alloy","authors":"Iraj Khoubrou,&nbsp;Bahram Nami,&nbsp;Seyyed Mehdi Miresmaeili,&nbsp;Milad Yazdani","doi":"10.1007/s12540-024-01730-9","DOIUrl":"10.1007/s12540-024-01730-9","url":null,"abstract":"<div><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>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 1","pages":"227 - 236"},"PeriodicalIF":3.3,"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}

{"title":"Tension/Compression Difference in Creep Resistances of Wrought Mg-Zn-Based Alloy with Icosahedral Quasicrystal Phases","authors":"Yu-Lei Ying,&nbsp;Zhi-Ping Guan,&nbsp;Kai Guan,&nbsp;Pin-Kui Maa,&nbsp;Wei Yanb,&nbsp;Gang Wangc","doi":"10.1007/s12540-024-01736-3","DOIUrl":"10.1007/s12540-024-01736-3","url":null,"abstract":"<div><p>In this work, icosahedral quasicrystal phases (I-phases) distributed at grain boundary triple junctions were successfully obtained in Mg-6Zn-0.4Mn-0.3Al-0.2Ca (ZMAX6000) alloy through heat treatment. The effects of I-phases on tensile and compressive creep behaviors were investigated separately. The tensile creep resistance of the sample containing I-phases was superior to its compressive creep resistance under the same test conditions. Moreover, the sample exhibited a significant tension/compression difference in creep resistance. Tensile and compressive creep stress exponents of the sample were ~ 4.9 and ~ 2.3, which implied that the tensile and compressive creep mechanisms might be dislocation slip and grain boundary sliding, respectively. Microstructural characterizations revealed that I-phase could suppress the premature convergence of cracks at grain boundary triple junctions during tensile creep deformation. Nevertheless, cracks might be preferentially generated around I-phases distributed at grain boundary triple junctions due to grain boundary sliding, during compressive creep deformation. The different effects of I-phases on crack development could cause the tension/compression difference in the creep resistance of the alloy.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 1","pages":"60 - 69"},"PeriodicalIF":3.3,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141824640","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}

{"title":"Correction: Impact of Co on Thermal Aging in Sn58Bi/Cu Solder Joints: IMC Growth and Transformation in Mechanical Properties","authors":"Xi Huang,&nbsp;Liang Zhang,&nbsp;Li-bin Rao,&nbsp;Lei Sun","doi":"10.1007/s12540-024-01747-0","DOIUrl":"10.1007/s12540-024-01747-0","url":null,"abstract":"","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"30 11","pages":"3140 - 3140"},"PeriodicalIF":3.3,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141652213","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}