Influence of micro arc oxidation coating thickness and prior shot peening on the fatigue behavior of 6061-T6 Al alloy

材料科学 喷丸 涂层 残余应力 喷丸 复合材料 成核 表面粗糙度 表面光洁度 基质(水族馆) 合金 压力(语言学) 冶金 海洋学 地质学 哲学 有机化学 化学 语言学
作者
Y. Madhavi,L. Rama Krishna,N. Narasaiah
出处
期刊:International Journal of Fatigue [Elsevier BV]
卷期号:126: 297-305 被引量:26
标识
DOI:10.1016/j.ijfatigue.2019.05.013
摘要

Micro arc oxidation (MAO) coatings of 5-different thicknesses were formed on 6061-T6 Al alloy with and without prior shot peening. The surface and cross-sectional morphologies, the surface roughness (Ra, Rz), relative phase composition, depth of peening were investigated as a function of MAO coating thickness. The high cycle fatigue performance of Plain MAO and prior shot peened MAO (SP + MAO) coatings were evaluated as a function of coating thickness and maximum alternating stress levels in comparison with that of bare substrate. Independent of the coating thickness, the Plain MAO coatings offer substantial degradation in fatigue life wherein the extent of fatigue debit increases with increasing coating thickness. Increasing surface roughness of Plain MAO coatings with increasing coating thickness resulted in multiple crack nucleation leading to consistent debit in fatigue life. However, irrespective of coating thickness, SP + MAO samples exhibit consistently improved fatigue life over the entire alternating stress range investigated wherein the net effect of increased surface roughness with increasing coating thickness was well-compensated by the compressive residual stresses present beneath the substrate-coating interface. The fractured surface and progressive crack morphologies clearly highlight the mechanisms responsible for the overall fatigue life are distinctly different for the Plain MAO and SP + MAO coatings as a function of coating thickness.
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
yy完成签到 ,获得积分10
3秒前
一川发布了新的文献求助10
3秒前
3秒前
3秒前
大大完成签到,获得积分10
5秒前
量子星尘发布了新的文献求助10
6秒前
科研小白完成签到 ,获得积分10
6秒前
7秒前
highrain完成签到,获得积分20
7秒前
7秒前
领导范儿应助666采纳,获得10
7秒前
bingbing发布了新的文献求助10
8秒前
9秒前
丘比特应助她很可疑啊采纳,获得10
10秒前
潘多拉完成签到,获得积分10
10秒前
情怀应助zxl采纳,获得10
11秒前
ZTX发布了新的文献求助30
11秒前
12秒前
12秒前
13秒前
哈皮关注了科研通微信公众号
14秒前
GY完成签到,获得积分10
14秒前
小二郎应助甜甜的寻真采纳,获得10
15秒前
开朗的又菱完成签到,获得积分10
15秒前
saxg_hu完成签到,获得积分10
17秒前
17秒前
22222发布了新的文献求助10
17秒前
她很可疑啊完成签到,获得积分20
18秒前
wangfeng007发布了新的文献求助30
18秒前
Lucas应助一川采纳,获得10
19秒前
yangxinLuo完成签到,获得积分20
21秒前
小慈发布了新的文献求助10
21秒前
友好故事完成签到,获得积分10
21秒前
酷炫的尔丝完成签到 ,获得积分10
21秒前
XMUyxy完成签到,获得积分10
23秒前
Dritsw应助highrain采纳,获得10
24秒前
Hello应助呆萌冷风采纳,获得10
25秒前
小葵完成签到,获得积分10
26秒前
Hello应助DD采纳,获得10
28秒前
wangfeng007完成签到,获得积分10
28秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
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 3969884
求助须知:如何正确求助?哪些是违规求助? 3514604
关于积分的说明 11174901
捐赠科研通 3249928
什么是DOI,文献DOI怎么找? 1795149
邀请新用户注册赠送积分活动 875599
科研通“疑难数据库(出版商)”最低求助积分说明 804891