已入深夜,您辛苦了!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!祝你早点完成任务,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
1秒前
为医消得人憔悴完成签到 ,获得积分10
1秒前
zjgjnu发布了新的文献求助10
2秒前
2秒前
3秒前
Peter发布了新的文献求助10
4秒前
瘦瘦语蕊完成签到,获得积分10
7秒前
8秒前
8秒前
Steven发布了新的文献求助10
8秒前
9秒前
哈哈完成签到,获得积分10
10秒前
共享精神应助科研通管家采纳,获得10
11秒前
11秒前
11秒前
Rondab应助科研通管家采纳,获得10
11秒前
香蕉觅云应助科研通管家采纳,获得10
11秒前
Rondab应助科研通管家采纳,获得10
11秒前
11秒前
田様应助科研通管家采纳,获得10
11秒前
dapis完成签到,获得积分10
11秒前
Rondab应助科研通管家采纳,获得10
11秒前
orixero应助科研通管家采纳,获得10
11秒前
汉堡包应助科研通管家采纳,获得10
11秒前
11秒前
SciGPT应助科研通管家采纳,获得10
11秒前
11秒前
11秒前
研友_LNM558完成签到,获得积分20
15秒前
一直向前发布了新的文献求助10
15秒前
16秒前
momo发布了新的文献求助10
18秒前
哈哈发布了新的文献求助10
20秒前
fanyueyue应助dart1023采纳,获得10
20秒前
1111完成签到 ,获得积分10
25秒前
旭007完成签到,获得积分20
26秒前
烟花应助Beyond采纳,获得30
27秒前
负责怀莲发布了新的文献求助10
28秒前
29秒前
旭007发布了新的文献求助10
31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 3989857
求助须知:如何正确求助?哪些是违规求助? 3531994
关于积分的说明 11255679
捐赠科研通 3270758
什么是DOI,文献DOI怎么找? 1805053
邀请新用户注册赠送积分活动 882195
科研通“疑难数据库(出版商)”最低求助积分说明 809208