Acta Metallurgica Sinica-English Letters最新文献_第10页

Effect of Ta on Tensile Behavior and Deformation Mechanism of a Nickel-Based Single Crystal Superalloy Ta 对镍基单晶超级合金拉伸行为和变形机制的影响

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-22 DOI: 10.1007/s40195-024-01753-6

Mingtao Ge, Xinguang Wang, Yongmei Li, Zihao Tan, Xipeng Tao, Yanhong Yang, Liang Wang, Chunhua Zhang, Song Zhang, Yizhou Zhou, Xiaofeng Sun

{"title":"Effect of Ta on Tensile Behavior and Deformation Mechanism of a Nickel-Based Single Crystal Superalloy","authors":"Mingtao Ge, Xinguang Wang, Yongmei Li, Zihao Tan, Xipeng Tao, Yanhong Yang, Liang Wang, Chunhua Zhang, Song Zhang, Yizhou Zhou, Xiaofeng Sun","doi":"10.1007/s40195-024-01753-6","DOIUrl":"10.1007/s40195-024-01753-6","url":null,"abstract":"<div>The effects of Ta on the tensile behavior and deformation mechanisms of a Ni-based single crystal superalloy were investigated in this study from room temperature to elevated temperature. The findings demonstrated that the higher content of Ta could improve the tensile properties of the alloy at different temperatures. Due to the different deformation mechanisms at various temperatures, the influence of Ta on tensile deformation varied. At room temperature, the higher content of Ta enhanced the solid solution strengthening, which would enhance the tensile strength of 6.5Ta alloy. After standard heat treatment of 6.5Ta alloy, precipitation of the secondary γʹ phase would hinder the movement of dislocations. When the temperature was elevated to 760 °C, the higher content of Ta not only promoted the interaction of stacking faults to form Lomer–Cottrell (L-C) locks that impeded dislocation motion, but also reduced the occurrence of dislocation pile-up groups, thus enhancing the yield strength. At 1120 °C, due to the narrower γ channels and higher APB energy in γʹ phase of the alloy with higher Ta addition, the processes of bypassing and shearing of dislocations were hindered, respectively. Meanwhile, the denser and more regular dislocation networks were formed in 6.5Ta alloy; and thus, the tensile strength of 6.5Ta alloy was enhanced. This study systematically investigated the effect of Ta on the tensile behavior at three different temperatures, which provided an important theoretical basis for the design of nickel-based single crystal superalloys in the future.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 11","pages":"1921 - 1934"},"PeriodicalIF":2.9,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Influence of Substituting W for Nb or Hf on Solidification Behavior of a Typical Co–Ni–Al–W Based Superalloy 以 W 替代 Nb 或 Hf 对典型 Co-Ni-Al-W 基超耐热合金凝固行为的影响

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-22 DOI: 10.1007/s40195-024-01749-2

Huifang Zhang, Jun Xie, Qi Li, Hao Wu, Jinjiang Yu, Hongyu Chai, Fengjiang Zhang, Jinguo Li, Yizhou Zhou, Xiaofeng Sun

{"title":"Influence of Substituting W for Nb or Hf on Solidification Behavior of a Typical Co–Ni–Al–W Based Superalloy","authors":"Huifang Zhang, Jun Xie, Qi Li, Hao Wu, Jinjiang Yu, Hongyu Chai, Fengjiang Zhang, Jinguo Li, Yizhou Zhou, Xiaofeng Sun","doi":"10.1007/s40195-024-01749-2","DOIUrl":"10.1007/s40195-024-01749-2","url":null,"abstract":"<div>Understanding the effects of various elements on solidification behavior is crucial for designing the composition of γ’-strengthened Co-based superalloys and is fundamental for controlling the as-cast structure and formulating subsequent heat treatment processes. This research investigated the effects of replacing 1 at.% W with 1 at.% Nb or Hf elements on the solidification behavior of Co–Ni–Al–W-based superalloys. The findings revealed that substituting W with Nb and Hf resulted in a notable decrease in both the solidus temperature (TS) and liquidus temperature (TL). Specifically, the substitution of W with Nb lowered TS from 1353 °C to 1332 °C and TL from 1383 °C to 1368 °C, while replacing W with Hf decreased TS from 1353 °C to 1330 °C and TL from 1383 °C to 1366 °C. Moreover, both Nb and Hf element are positive segregation element, while Nb decreases and Hf increases W segregation, respectively. During the final solidification stage, the substitution of W with Nb resulted in the formation of eutectic (γ + γ’), Co3Ta, and a small amount of μ-Co7Nb6 phase, while replacing W with Hf resulted in the formation of the Laves phase and β-CoAl phase. The solidification paths of the three alloys were confirmed based on the result of differential scanning calorimetry, isothermal solidification experiment and Thermo-calc simulation. These results offer a theoretical basis for the composition design and optimization of heat treatment processes for Co–Ni–Al–W-based superalloys.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 11","pages":"1907 - 1920"},"PeriodicalIF":2.9,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

High Strength and Heat Resistance of Low-RE-Containing Mg Alloy Achieved via Substantial Dynamic Precipitates 通过大量动态沉淀实现低RE镁合金的高强度和耐热性

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-22 DOI: 10.1007/s40195-024-01751-8

Dongdong Zhang, Mingyang Chen, Xiaoru Zhang, Ke Li, Liqing Wang, Zhanyong Zhao, Peikang Bai, Daqing Fang

{"title":"High Strength and Heat Resistance of Low-RE-Containing Mg Alloy Achieved via Substantial Dynamic Precipitates","authors":"Dongdong Zhang, Mingyang Chen, Xiaoru Zhang, Ke Li, Liqing Wang, Zhanyong Zhao, Peikang Bai, Daqing Fang","doi":"10.1007/s40195-024-01751-8","DOIUrl":"10.1007/s40195-024-01751-8","url":null,"abstract":"<div>Conventional high-strength Mg-RE-based wrought alloys usually contain a high amount of RE solutes, which largely increases the alloy cost and thus restricts their adoptions. In this work, we developed a low-RE-containing Mg-3Sm-1Nd-0.6Zn-0.4Zr alloy by hot extrusion with low extrusion ratio, which shows a high tensile yield strength (TYS) of 435 MPa and a satisfactory elongation of 5.6% at room temperature, outperforming most Mg-Gd-Y-based extrusion alloys with RE contents of 12 wt% at least. Outstanding high-temperature strength, such as the TYS of 280 MPa at 200 °C and 251 MPa at 250 °C, is also obtained in this alloy. The alloy presented a typical bimodal grain structure including coarse hot-worked grains with a strong texture and fine recrystallized grains with random orientations. Also, abundant Mg3RE particles were mostly introduced in hot-worked grains and at recrystallized grain boundaries by dynamic precipitation during extrusion. Consequently, the high strength of this alloy is principally attributed to the combined hardening effect of numerous Mg3RE particles, fine recrystallized grains, and strongly textural hot-worked grains, rather than the ultra-strong age-hardening effect in traditional high RE-alloyed Mg alloys.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 11","pages":"1830 - 1842"},"PeriodicalIF":2.9,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effects of Post-Heat Treatment and Carbide Precipitates on Strength-Ductility Balance of GH3536 Superalloy Prepared by Selective Laser Melting 后热处理和碳化物沉淀对选择性激光熔化制备的 GH3536 超耐热合金强度-延展性平衡的影响

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-22 DOI: 10.1007/s40195-024-01748-3

Le Xia, Haijun Su, Quandong Hu, Yinuo Guo, Peixin Yang, Hongliang Gao, Minghui Yu, Min Guo, Zhuo Zhang, Lin Liu, Hengzhi Fu

{"title":"Effects of Post-Heat Treatment and Carbide Precipitates on Strength-Ductility Balance of GH3536 Superalloy Prepared by Selective Laser Melting","authors":"Le Xia, Haijun Su, Quandong Hu, Yinuo Guo, Peixin Yang, Hongliang Gao, Minghui Yu, Min Guo, Zhuo Zhang, Lin Liu, Hengzhi Fu","doi":"10.1007/s40195-024-01748-3","DOIUrl":"10.1007/s40195-024-01748-3","url":null,"abstract":"<div>The strength and ductility cannot achieve a good tradeoff for some superalloy (e.g. GH3536) prepared by selective laser melting (SLM), which seriously restricts their industrial applications. This work examined the effect of post-heat treatment (HT) on the microstructure and mechanical properties of GH3536 produced by SLM. In particular, the influence of carbide precipitate morphology and distribution on strength and ductility of the alloy after heat treatment was discussed. After aging at 650 °C (denoted as HT1), the Cr23C6 carbides were distributed in chains. The ductility increased by approximately 31%, while the strength slightly decreased. After aging at 745 °C (denoted as HT2), the Cr23C6 carbides were distributed in chains. However, the HT2 samples showed an increase in ductility of ~ 58% and no reduction in strength. As the dislocation density of HT2 sample was higher than that of the HT1 sample, the chain carbides could be pinned to the grain boundaries, consequently improving the ductility but no loss in strength as compared with the as-deposited samples. When the aging temperature was increased to 900 °C (denoted as HT3), the carbides were distributed in a discontinuous granular form. As a result, the HT3 samples presented the lowest dislocation density which reduced the strength.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 10","pages":"1667 - 1679"},"PeriodicalIF":2.9,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A Review of Magnesium Alloys as Structure–Function Integrated Materials 作为结构-功能一体化材料的镁合金综述

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-10 DOI: 10.1007/s40195-024-01706-z

Zhenfei Jiang, Bo Hu, Zixin Li, Fanjin Yao, Jiaxuan Han, Dejiang Li, Xiaoqin Zeng, Wenjiang Ding

{"title":"A Review of Magnesium Alloys as Structure–Function Integrated Materials","authors":"Zhenfei Jiang, Bo Hu, Zixin Li, Fanjin Yao, Jiaxuan Han, Dejiang Li, Xiaoqin Zeng, Wenjiang Ding","doi":"10.1007/s40195-024-01706-z","DOIUrl":"10.1007/s40195-024-01706-z","url":null,"abstract":"<div>Magnesium alloys have a significant advantage, lower density over the other structure materials; hence, they have been widely used in various fields such as transportation and aerospace. With the development of research and the enlargement of the research scope, more advantages have been revealed: excellent shielding efficiency, extraordinarily high damping capacity, as well as impressive thermal conductivity. Therefore, Mg alloys have the potential to be various functional materials, such as electromagnetic shielding material, damping material, and thermal conductive material. This review comprehensively summarizes the research progress and the up-to-date summary of Mg alloys as structure–function integrated materials in recent years. Solute atoms, heat treatment, deformation, secondary phase, and temperature, which have a significant influence on the properties of magnesium alloys, are highlighted. We expect this review to be helpful for those who are working on developing structure–function integrated materials with superior comprehensive performance.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 8","pages":"1301 - 1338"},"PeriodicalIF":2.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141659623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of Ag on High-Temperature Oxidation Behavior of Mg–6.5Gd–5.6Y–0.1Nd–0.01Ce–0.4Zr Alloy 银对 Mg-6.5Gd-5.6Y-0.1Nd-0.01Ce-0.4Zr 合金高温氧化行为的影响

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-10 DOI: 10.1007/s40195-024-01732-x

Shuang Guo, Tianyu Liu, Tianjiao Luo, Yingju Li, Xiaohui Feng, Qiuyan Huang, Ce Zheng, Cheng Zhu, Yuansheng Yang, Weirong Li, Feng Li

{"title":"Effect of Ag on High-Temperature Oxidation Behavior of Mg–6.5Gd–5.6Y–0.1Nd–0.01Ce–0.4Zr Alloy","authors":"Shuang Guo, Tianyu Liu, Tianjiao Luo, Yingju Li, Xiaohui Feng, Qiuyan Huang, Ce Zheng, Cheng Zhu, Yuansheng Yang, Weirong Li, Feng Li","doi":"10.1007/s40195-024-01732-x","DOIUrl":"10.1007/s40195-024-01732-x","url":null,"abstract":"<div>In this paper, the isothermal oxidation experiments were used to study the effect of Ag on the high-temperature oxidation behavior of Mg–6.5Gd–5.6Y–0.1Nd–0.01Ce–0.4Zr (wt%) alloy oxidized at 350 °C, 400 °C and 450 °C for 120 h. The results show that the oxidation weight gain of the alloy mainly occurs in the early oxidation stage (0–20 h). This reason attributes to the lack of protective oxide film and the rapid inward diffusion of oxygen through the macroscopic defects of the incomplete oxide film. When dense oxide films such as Y2O3, Gd2O3, and ZrO2 form, they hinder the inward transport of oxygen ions and improve the high-temperature oxidation resistance of the alloy. In addition, the role of the Ag element at three temperatures is different. The addition of Ag mainly promotes the formation of eutectic phases such as Mg3Gd, Mg24Y5, and Ag2Gd, which reduces the content of Gd and Y elements in the alloy matrix, resulting in a decrease in the diffusion rate of Gd and Y elements during the oxidation process at 350 °C and 400 °C, and weakens the oxidation resistance of Ag-containing alloys. However, in the oxidation experiment at 450 °C, a large amount of eutectic phase is solid dissolved into the matrix, reducing the difference in element content. At this time, it is detected that the Ag element promoted the outward diffusion of Gd and Y elements, accelerating the formation of the oxide film. The oxidation resistance of Ag-containing alloys is improved.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 11","pages":"1843 - 1857"},"PeriodicalIF":2.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141660249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Detwinning and Anneal-Hardening Behaviors of Pre-Twinned AZ31 Alloys under Cryogenic Loading 预孪晶 AZ31 合金在低温载荷下的变形和退火硬化行为

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-10 DOI: 10.1007/s40195-024-01744-7

Lingyu Zhao, Wei Zhu, Chao Zhang, Yunchang Xin, Changjian Yan, Yao Cheng, Zhaoyang Jin

{"title":"Detwinning and Anneal-Hardening Behaviors of Pre-Twinned AZ31 Alloys under Cryogenic Loading","authors":"Lingyu Zhao, Wei Zhu, Chao Zhang, Yunchang Xin, Changjian Yan, Yao Cheng, Zhaoyang Jin","doi":"10.1007/s40195-024-01744-7","DOIUrl":"10.1007/s40195-024-01744-7","url":null,"abstract":"<div>Detwinning behavior of a pre-twinned magnesium alloy AZ31 at cryogenic temperature was investigated, also with a focus on the annealing hardening behavior of samples with different fractions of pre-twins. Pre-compression along the transverse direction with strains of 1.7%, 3.0%, and 6.0% was applied to generated (left{ {10overline{1}2} right}) twins. Mechanical behavior, microstructure, and texture evolution during subsequent tension were examined. Our results show that low temperature did not change the fact that detwinning still pre-dominated in the pre-twinned samples under reverse loading. However, a relatively harder migration of twin boundaries was found at cryogenic temperature. An annealing hardening of 27-40 MPa was observed in the pre-twinned samples, and such a hardening effect shows a close relation with the fraction of pre-twins or the level of pre-strains. The annealing hardening effect disappeared if the matrix was consumed by twins along with the increased pre-compression strains. The corresponding reasons for the annealing hardening behavior were discussed.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 9","pages":"1551 - 1563"},"PeriodicalIF":2.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141661561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Reduction of High-Frequency Core Loss of a Fe77.2Si11B8.5Cu0.8Nb2.5 Soft Magnetic Nanocrystalline Alloy by Minor Alloying 通过少量合金化降低 Fe77.2Si11B8.5Cu0.8Nb2.5 软磁纳米晶合金的高频磁芯损耗

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-10 DOI: 10.1007/s40195-024-01729-6

Shushen Guo, Yanhui Li, Yibing Zhang, Lu Yang, Wei Zhang

{"title":"Reduction of High-Frequency Core Loss of a Fe77.2Si11B8.5Cu0.8Nb2.5 Soft Magnetic Nanocrystalline Alloy by Minor Alloying","authors":"Shushen Guo, Yanhui Li, Yibing Zhang, Lu Yang, Wei Zhang","doi":"10.1007/s40195-024-01729-6","DOIUrl":"10.1007/s40195-024-01729-6","url":null,"abstract":"<div>Enhancing saturation magnetic flux density (Bs) while reducing high-frequency core loss in Finemet-type nanocrystalline alloys is of great significance in achieving the miniaturization, high-frequency, and energy-saving of modern power electronic devices. In this work, we first designed a high-Bs Fe77.2Si11B8.5Cu0.8Nb2.5 alloy by appropriately reducing the non-magnetic elements in typical Finemet nanocrystalline alloys, and subsequently alloyed 2 at% Co, Al, and Mo, respectively. The effects of alloying elements on structure and static and high-frequency magnetic properties were studied. The results reveal that, alloying Al or Mo reduces the average α-Fe grain size (Dα-Fe) in the nanocrystalline alloys, while Co exhibits a slight influence. The added Al or Mo results in decreases in both the Bs and coercivity (Hc) of the nanocrystalline alloys, whereas Co increases the Bs without changing Hc, and meanwhile, all alloying elements show minimal effects on effective permeability (μe). Furthermore, the addition of Co, Al, or Mo lowers the core loss (Pcv) at 0.2 T/100 kHz of the based nanocrystalline alloy with reductions of 10.9%, 29.6%, and 26.8%, respectively. A Fe75.2Si11B8.5Cu0.8Nb2.5Al2 nanocrystalline alloy exhibits outstanding soft magnetic properties with Bs, Hc, μe at 10 kHz and 100 kHz, and Pcv at 0.2 T/100 kHz of 1.34 T, 0.8 A/m, 27,400, 18,000, and 350 kW/m3, respectively. The reduction in Pcv is primarily attributed to the decreased eddy current losses, originating from the increased electrical resistivity by elements alloying.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 11","pages":"1984 - 1992"},"PeriodicalIF":2.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141662500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Atomistic Investigation of Shock-Induced Amorphization within Micro-shear Bands in Hexagonal Close-Packed Titanium 六方紧密堆积钛微剪切带内冲击诱导变质的原子学研究

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-10 DOI: 10.1007/s40195-024-01723-y

Z. C. Meng, K. G. Wang, T. Ali, D. Li, C. G. Bai, D. S. Xu, S. J. Li, A. H. Feng, G. J. Cao, J. H. Yao, Q. B. Fan, H. Wang, R. Yang

引用次数: 0

Microstructure Characteristics, Texture Evolution and Mechanical Properties of Al–Mg–Si–Mn–xCu Alloys via Extrusion and Heat Treatment 通过挤压和热处理获得的 Al-Mg-Si-Mn-xCu 合金的微观结构特征、纹理演变和力学性能

IF 2.9 2区材料科学

Acta Metallurgica Sinica-English Letters Pub Date : 2024-07-04 DOI: 10.1007/s40195-024-01713-0

Zulai Li, Yingxing Zhang, Junlei Zhang, Xiang Chen, Suokun Chen, Lujian Cui, Shengjie Han

{"title":"Microstructure Characteristics, Texture Evolution and Mechanical Properties of Al–Mg–Si–Mn–xCu Alloys via Extrusion and Heat Treatment","authors":"Zulai Li, Yingxing Zhang, Junlei Zhang, Xiang Chen, Suokun Chen, Lujian Cui, Shengjie Han","doi":"10.1007/s40195-024-01713-0","DOIUrl":"10.1007/s40195-024-01713-0","url":null,"abstract":"<div>In this work, the impact of extrusion and post-extrusion heat treatment (T6) on the microstructure and mechanical properties of the Al-1.2Mg-0.8Si-0.5Mn alloy with different Cu contents (0, 0.6, 1.3 and 2.0 wt%) was studied. Microstructure characterization showed that all extruded alloys exhibited elongated grain structure with an average grain size of ~ 4.8 μm. The dominant texture components were deformation texture (A*, Copper and P texture), while the proportion of random texture initially increased and then decreased with increasing Cu content. After T6 treatment, the grain size of the four alloys increased significantly, but the growth trend decreased with increasing Cu content, and the textures transformed into recrystallized textures (Cube, A and Goss texture). Tensile testing revealed that the designed T6 alloys with 2.0% Cu content exhibited an excellent strength-ductility balance, i.e., a yield strength of 342.9 MPa, an ultimate tensile strength of 424.8 MPa and an elongation of 15.9%. The enhanced strength was mainly attributed to fine grain strengthening, solid solution strengthening and aging strengthening mechanisms. The superior ductility was due to the pinning effect of fine precipitates and high dislocation accommodation capacity caused by heat treatment.</div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"37 9","pages":"1501 - 1522"},"PeriodicalIF":2.9,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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