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
1秒前
3秒前
水溶c100发布了新的文献求助10
5秒前
ren关注了科研通微信公众号
6秒前
Ava应助Stardust采纳,获得10
7秒前
桐桐应助十九岁的时差采纳,获得10
7秒前
7秒前
8秒前
研究生完成签到,获得积分10
8秒前
自觉的凛发布了新的文献求助10
9秒前
所所应助开灯人和关灯人采纳,获得10
9秒前
讨厌科研发布了新的文献求助10
10秒前
快乐一江发布了新的文献求助10
10秒前
12秒前
Tianling完成签到,获得积分0
13秒前
好吃鱼完成签到,获得积分10
13秒前
等一个晴天完成签到,获得积分10
16秒前
胡涂涂发布了新的文献求助10
18秒前
研友_VZG7GZ应助小赞采纳,获得10
19秒前
量子星尘发布了新的文献求助10
20秒前
快乐一江完成签到,获得积分10
22秒前
23秒前
28秒前
啊标完成签到,获得积分10
28秒前
28秒前
水溶c100完成签到,获得积分10
29秒前
梨江鱼完成签到,获得积分10
29秒前
LcnTCM完成签到,获得积分10
29秒前
32秒前
maizhenpeng发布了新的文献求助10
33秒前
执着乐双发布了新的文献求助30
35秒前
小赞发布了新的文献求助10
35秒前
39秒前
43秒前
沈静完成签到,获得积分10
43秒前
45秒前
loski发布了新的文献求助10
45秒前
marina完成签到 ,获得积分20
46秒前
49秒前
时尚俊驰发布了新的文献求助10
49秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
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 3989378
求助须知:如何正确求助?哪些是违规求助? 3531442
关于积分的说明 11254002
捐赠科研通 3270126
什么是DOI,文献DOI怎么找? 1804887
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809173