Crack initiation and propagation dominated by strain localization in quasi-single crystal and poly-crystalline of a Ni-based complex concentrated alloy

材料科学 晶界 碳化物 成核 合金 晶间腐蚀 微晶 断裂力学 冶金 应变硬化指数 晶间断裂 降水 加工硬化 沉淀硬化 复合材料 微观结构 物理 气象学 有机化学 化学
作者
Zhaowen Huang,Xiangwei Li,Donghui Wen,Qiujuan Guo,Anding Wang,Jiasheng Dong,Fengyu Kong,Xiaodong Hou,Yusheng Li,Biao Wang,Yuntian Zhu
出处
期刊:Materials Characterization [Elsevier BV]
卷期号:201: 112973-112973 被引量:5
标识
DOI:10.1016/j.matchar.2023.112973
摘要

Cracking is the precursor of the final fracture for most engineering materials, often affected by various microstructural characteristics including grain orientation, boundary, precipitation, etc. In this study, the fracture behaviour of a typical Ni-based complex concentrated alloy (CCA) was systematically investigated. These CCAs were fabricated using fine-grain casting and directional-solidification processes, which consists of quasi-single crystal (QSC) and poly crystalline structures respectively. Quasi-static tensile test results combined with morphology characterizations and crystal plasticity analyses suggest that microcracks tend to nucleate at the matrix/carbide interfaces in QSC and then propagate along the maximum slip direction at the crack tips. The crack path showed a distinctive zig-zag shape, beneficial for consuming the crack propagation energy. In consideration of carbide morphology, script-typed carbides were found to be very effective in hindering dislocation movements, resulting in admirable work hardening ability. In polycrystalline, however, microcracks are commonly found near the carbides that precipitate at grain boundaries, then developed quickly to connect with each other, leading to premature intergranular fracture. Grain boundary carbides were detrimental to mechanical performance. Considering the large amounts of investigations on second phase and precipitation, these new findings about carbide-related crack behaviours could be extended to other second phase hardening materials, providing new routes to design high-performance alloys by controlling the precipitation morphology and position.
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
小马甲应助鲤鱼似狮采纳,获得10
1秒前
1秒前
ttt完成签到,获得积分10
3秒前
饼饼完成签到,获得积分10
5秒前
科研通AI5应助王华楠采纳,获得10
6秒前
7秒前
8秒前
8秒前
gao应助cindywu采纳,获得10
10秒前
顾矜应助郭小宝采纳,获得10
11秒前
12秒前
13秒前
英子发布了新的文献求助10
13秒前
肝胆外科医生完成签到,获得积分10
13秒前
淡定草丛发布了新的文献求助10
14秒前
Ella完成签到,获得积分10
15秒前
15秒前
天天开心完成签到,获得积分10
16秒前
17秒前
17秒前
研友_ngkyGn应助徐rl采纳,获得10
18秒前
科研通AI2S应助张于小丸子采纳,获得10
18秒前
18秒前
Kris发布了新的文献求助10
19秒前
alex完成签到,获得积分10
21秒前
22秒前
郭小宝发布了新的文献求助10
22秒前
24秒前
泡面养鱼发布了新的文献求助10
25秒前
ding应助大头采纳,获得10
26秒前
臧佳莹发布了新的文献求助10
27秒前
量子星尘发布了新的文献求助10
27秒前
咚咚完成签到 ,获得积分10
28秒前
王华楠发布了新的文献求助10
29秒前
水流众生完成签到 ,获得积分10
30秒前
30秒前
star完成签到,获得积分10
32秒前
科研通AI5应助臧佳莹采纳,获得10
32秒前
cyh关注了科研通微信公众号
36秒前
fox完成签到 ,获得积分10
36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 3988997
求助须知:如何正确求助?哪些是违规求助? 3531351
关于积分的说明 11253520
捐赠科研通 3269928
什么是DOI,文献DOI怎么找? 1804830
邀请新用户注册赠送积分活动 882063
科研通“疑难数据库(出版商)”最低求助积分说明 809068