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地填写文献信息,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!

Dynamic mechanical behavior of ultra-high specific strength lightweight Ti61Al16Cr10Nb8V5 multi-principal element alloy

合金 材料科学 机械强度 冶金 复合材料 结构工程 工程类
作者
Yang-Yu He,Yifan Liu,Hongke Wang,Ya Liu,Xiangxiang Feng,Zhaohui Zhang,Luojing Liu,Xiaotong Jia,Qiang Wang,Xingwang Cheng
出处
期刊:Journal of Alloys and Compounds [Elsevier BV]
卷期号:992: 174522-174522 被引量:3
标识
DOI:10.1016/j.jallcom.2024.174522
摘要

This study investigated the dynamic mechanical property and microstructure evolution of the Ti61Al16Cr10Nb8V5 (Ti61) lightweight multi-principal element alloy(MPEA) with a density of 4.83 g/cm3. After melting and rolling, the Ti61 alloy was composed of a BCC matrix phase and dispersed B2 phase, and also contained a small amount of fine needle-like FCC phase and spherical HCP phase. Mechanical testing of Ti61 alloy revealed that the ultimate tensile strength is about 1223 MPa, and the tensile elongation is about 13.2%, with a specific strength of around 253 MPa*cm3/g. Dynamic compression testing of Ti61 alloy showed a significant strain rate strengthening effect and excellent fracture strain greater than 50%. Calculation and microstructural observations indicated that at low strain rates ranging from 10-3/s to 10/s, the strain rate sensitivity of Ti61 alloy was 0.0087, with the main plastic deformation mechanism of dislocation nucleation, dislocation slip, and stacking faults. At high strain rates ranging from 500/s to 5000/s, the strain rate sensitivity raises to 0.0963 and the main deformation mechanism of the Ti61 alloy involved higher-density dislocation nucleation, dislocation slip, stacking faults and twinning. At strain rates of 5000/s, HCP-FCC phase transition accompanied by FCC microtwins and BCC-α2HCP phase transition occurred. Furthermore, dynamic recrystallization also occurred in Ti61 alloy. The HCP-FCC has the orientation of (0001)HCP//(11-1)FCC, [1-210]HCP//[011]FCC. The BCC-α2HCP has the orientation of {101}BCC//{0001}HCP and [111]BCC//[2-1-10]HCP. Twining and phase transition strengthen the yield stress of Ti61 alloy, while dynamic recrystallization reduced the flow stress of Ti61 alloy. Ti61 alloy has high strength, high compression fracture strain, and ultra-high specific strength, which is a new LWMPEA with great application potential in military armor.
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
PDF的下载单位、IP信息已删除 (2025-6-4)

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
2秒前
在水一方应助和和和采纳,获得10
5秒前
wuran发布了新的文献求助10
6秒前
AiQi完成签到 ,获得积分10
13秒前
20秒前
博慧完成签到,获得积分10
21秒前
wanci应助ly采纳,获得10
23秒前
最最最发布了新的文献求助10
23秒前
30秒前
H_C发布了新的文献求助20
32秒前
利好完成签到 ,获得积分10
32秒前
35秒前
传奇3应助简单山水采纳,获得10
35秒前
和和和发布了新的文献求助10
37秒前
ly发布了新的文献求助10
38秒前
Wei完成签到 ,获得积分10
43秒前
稻子完成签到 ,获得积分10
45秒前
wanci应助ly采纳,获得10
52秒前
和和和完成签到,获得积分10
59秒前
小蘑菇应助iiii采纳,获得50
1分钟前
1分钟前
简单山水发布了新的文献求助10
1分钟前
1分钟前
灵感大王喵完成签到 ,获得积分10
1分钟前
1分钟前
1分钟前
iiii发布了新的文献求助50
1分钟前
爆米花应助拾光采纳,获得10
1分钟前
Percy完成签到 ,获得积分10
1分钟前
1分钟前
顾矜应助科研通管家采纳,获得10
1分钟前
英俊的铭应助简单山水采纳,获得10
1分钟前
1分钟前
鹿茸与共发布了新的文献求助10
1分钟前
SciGPT应助wuran采纳,获得10
1分钟前
2分钟前
2分钟前
充电宝应助仓鼠球采纳,获得10
2分钟前
拾光发布了新的文献求助10
2分钟前
wry完成签到,获得积分10
2分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 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 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3990015
求助须知:如何正确求助?哪些是违规求助? 3532077
关于积分的说明 11256227
捐赠科研通 3270933
什么是DOI,文献DOI怎么找? 1805139
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228