亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Achieving exceptional strength and ductility combination in a heterostructured Mg-Y alloy with densely refined twins

材料科学 合金 延展性(地球科学) 微观结构 极限抗拉强度 应变硬化指数 硬化(计算) 降水 再结晶(地质) 变形(气象学) 严重塑性变形 冶金 复合材料 蠕动 古生物学 气象学 物理 图层(电子) 生物
作者
Yuliang Yang,Yuxin Liu,Shuang Jiang,Ye Yuan,Weiye Chen,Lifang Sun,Zhufeng He,Xiaoli Zhao,N. Jia
出处
期刊:Journal of Materials Science & Technology [Elsevier]
卷期号:189: 132-145 被引量:4
标识
DOI:10.1016/j.jmst.2023.11.042
摘要

Metals and alloys with heterogeneous microstructures are an emerging class of materials that exhibit exceptional mechanical properties, owing to the novel scientific principle of hetero-deformation induced (HDI) strengthening and hardening. For magnesium alloys, due to their low recrystallization temperature, poor ductility at room temperature, limited cold workability, and the tendency to generate strong basal texture during deformation, it is difficult to obtain heterostructures without relying on precipitation of the second phases. Here, three heterostructured Mg-2.9Y (wt.%) materials with varying accumulative equivalent true strains, i.e., 5%-5 cycles, 7.5%-5 cycles, and 10%-5 cycles materials were fabricated via applying five complete triaxial compression cycles to the bulk alloy. The 5%-5 cycles material with an accumulative equivalent true strain of 0.37 is featured with long twin lamellae embedded in coarse grains. When the accumulative true strain increases to 0.72, a heterogeneous structure composed of long and short twin lamellae is formed inside the 7.5%-5 cycles material. As the equivalent true strain further increases to 1.01, the 10%-5 cycles material exhibits a mixed structure with densely refined twin lamellae embedded in the coarse-grained matrix. The room-temperature uniaxial tensile tests show that the yield strength of the materials processed by triaxial cyclic compression (TCC) has been significantly improved compared to that at the initial state, whereas ductility was not significantly sacrificed without the subsequent heat treatment. The dense and refined twin lamellae that serve as hard domains in this material provide a high density of interfaces and impede dislocation motion effectively. This results in significant HDI strengthening and hardening. These findings provide new insight into the design of heterostructured hexagonal close-packed materials with both high strength and good ductility.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
上官凯凯完成签到 ,获得积分10
1秒前
科研通AI2S应助科研通管家采纳,获得10
5秒前
123应助科研通管家采纳,获得10
5秒前
科研通AI2S应助科研通管家采纳,获得10
6秒前
NexusExplorer应助科研通管家采纳,获得10
6秒前
FashionBoy应助科研通管家采纳,获得10
6秒前
JamesPei应助科研通管家采纳,获得10
6秒前
怀玉完成签到 ,获得积分10
9秒前
17秒前
李昕123完成签到 ,获得积分10
21秒前
29秒前
36秒前
小小aa16完成签到,获得积分10
40秒前
科研通AI2S应助别踩痛了雪采纳,获得10
42秒前
Langsam发布了新的文献求助50
44秒前
aaa发布了新的文献求助10
44秒前
47秒前
52秒前
敉_发布了新的文献求助10
54秒前
59秒前
狐狸萌萌哒完成签到 ,获得积分10
1分钟前
1分钟前
1分钟前
1分钟前
skbkbe发布了新的文献求助10
1分钟前
岁峰柒完成签到 ,获得积分10
1分钟前
1分钟前
洋子完成签到 ,获得积分10
1分钟前
1分钟前
高贵季节发布了新的文献求助10
1分钟前
邓娅琴完成签到 ,获得积分10
1分钟前
小橙同学完成签到 ,获得积分10
1分钟前
2分钟前
123应助科研通管家采纳,获得10
2分钟前
爆米花应助科研通管家采纳,获得10
2分钟前
小马甲应助科研通管家采纳,获得10
2分钟前
研友_VZG7GZ应助科研通管家采纳,获得10
2分钟前
科研通AI2S应助科研通管家采纳,获得10
2分钟前
ding应助科研通管家采纳,获得10
2分钟前
嘿嘿完成签到 ,获得积分10
2分钟前
高分求助中
좌파는 어떻게 좌파가 됐나:한국 급진노동운동의 형성과 궤적 2500
Sustainability in Tides Chemistry 1500
TM 5-855-1(Fundamentals of protective design for conventional weapons) 1000
Cognitive linguistics critical concepts in linguistics 800
Threaded Harmony: A Sustainable Approach to Fashion 799
Livre et militantisme : La Cité éditeur 1958-1967 500
氟盐冷却高温堆非能动余热排出性能及安全分析研究 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3052387
求助须知:如何正确求助?哪些是违规求助? 2709716
关于积分的说明 7418100
捐赠科研通 2354190
什么是DOI,文献DOI怎么找? 1245828
科研通“疑难数据库(出版商)”最低求助积分说明 605892
版权声明 595899