Understanding the wear behavior and mechanism of gradient nanostructured M50 bearing steel through nanoscratching tests

材料科学 机制(生物学) 方位(导航) 冶金 复合材料 法律工程学 哲学 地图学 认识论 工程类 地理
作者
Xiong Yue,Shan Hu,Fei Yin,Jian Wang
出处
期刊:Materials today communications [Elsevier]
卷期号:39: 109235-109235
标识
DOI:10.1016/j.mtcomm.2024.109235
摘要

A gradient nanostructured M50 bearing steel with gradient structural size, carbides, and dislocation density was successfully fabricated by ultrasonic shot peening (USP) technology at room temperature. The friction behaviour and mechanism of gradient nanostructure M50 steel were investigated by using nanoscratch technology under various normal applied loads and depths. Under low normal applied load, gradient samples at ~5 μm depth exhibited a 26.5% maximum reduction in wear rate compared to the tempered sample; under high normal applied load, wear rates for samples at ~100 μm depth exhibited a maximum reduction of 44.6%. At low normal applied load, the wear mechanism involves plowing; while at high normal applied load, the wear mechanism shifts to cutting. Under low normal applied load, wear resistance correlates positively with hardness and negatively with structural size. Under high normal applied load, the increase in hardness of the martensite matrix and the partial decomposition of coarse spherical carbides enable the carbides on the surface of the USPed sample to withstand higher shear stress and stronger stress concentration, preventing cracking of the matrix and carbide edges, and spalling of carbides. High dislocation density (resulting in residual compressive stress) will slow down or inhibit the generation and expansion of cracks during the scratching process, potentially explaining why samples at ~100 μm depths exhibit superior wear resistance.
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
刚刚
刚刚
2秒前
something完成签到,获得积分10
2秒前
Mister_CHEN完成签到,获得积分10
3秒前
4秒前
香葱苏打饼完成签到,获得积分10
6秒前
carcar完成签到,获得积分10
6秒前
海阔凭宇跃完成签到,获得积分10
7秒前
小二郎应助Xu_W卜采纳,获得10
7秒前
yang完成签到 ,获得积分10
7秒前
远山完成签到,获得积分10
8秒前
Polymer72发布了新的文献求助30
8秒前
youyouu完成签到,获得积分20
8秒前
9秒前
9秒前
险胜应助科研通管家采纳,获得10
9秒前
汉堡包应助科研通管家采纳,获得10
9秒前
乐乐应助科研通管家采纳,获得10
9秒前
情怀应助科研通管家采纳,获得10
9秒前
446应助科研通管家采纳,获得10
10秒前
10秒前
10秒前
10秒前
11秒前
11秒前
12秒前
ch发布了新的文献求助10
14秒前
恋空发布了新的文献求助10
15秒前
理工彭于晏完成签到,获得积分10
15秒前
CipherSage应助啦啦采纳,获得10
16秒前
16秒前
柚子给柚子的求助进行了留言
17秒前
17秒前
充电宝应助Polymer72采纳,获得30
17秒前
科研通AI2S应助恋空采纳,获得10
19秒前
简单的丑发布了新的文献求助10
19秒前
Smiles发布了新的文献求助10
20秒前
Xu_W卜发布了新的文献求助10
20秒前
October发布了新的文献求助10
21秒前
高分求助中
Solution Manual for Strategic Compensation A Human Resource Management Approach 1200
Natural History of Mantodea 螳螂的自然史 1000
Glucuronolactone Market Outlook Report: Industry Size, Competition, Trends and Growth Opportunities by Region, YoY Forecasts from 2024 to 2031 800
A Photographic Guide to Mantis of China 常见螳螂野外识别手册 800
Autoregulatory progressive resistance exercise: linear versus a velocity-based flexible model 500
The analysis and solution of partial differential equations 400
Spatial Political Economy: Uneven Development and the Production of Nature in Chile 400
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 物理化学 催化作用 细胞生物学 免疫学 冶金
热门帖子
关注 科研通微信公众号,转发送积分 3334372
求助须知:如何正确求助?哪些是违规求助? 2963568
关于积分的说明 8610576
捐赠科研通 2642546
什么是DOI,文献DOI怎么找? 1446799
科研通“疑难数据库(出版商)”最低求助积分说明 670402
邀请新用户注册赠送积分活动 658608