Microstructures and rolling contact fatigue behaviors of 17Cr2Ni2MoVNb steel under combined ultrasonic surface rolling and shot peening - Details

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Abstract：

A　novel　surface　treatment　method　of　combining　ultrasonic　surface　rolling　(USR)　and　shot　peening　(SP)　in　different　sequences　was　proposed.　The　microstructures　and　rolling　contact　fatigue　(RCF)　behaviors　of　17Cr2Ni2MoVNb　steel　were　investigated　after　USR　treatment,　SP　treatment　and　combined　(USR　+　SP　+　USR)　treatment.　Results　showed　that　the　combined　treatment　can　significantly　generate　ultra-fine　grains,　improve　surface　microhardness　and　induce　high　intensity　residual　compressive　stress　in　material　surface　layer.　The　samples　after　combined　treatment　with　the　lowest　surface　roughness　exhibited　the　maximum　mean　RCF　life　of　6.610　x　10(6)　cycles　and　the　fatigue　damage　mechanism　was　spalling.

Keyword：

Combined surface treatment Microstructures Rolling contact fatigue Shot peening Ultrasonic surface rolling

Community：

[ 1 ] [Zhang, Yalong]South China Univ Technol, Sch Mech & Automot Engn, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Peoples R China
[ 2 ] [Qu, Shengguan]South China Univ Technol, Sch Mech & Automot Engn, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Peoples R China
[ 3 ] [Lai, Fuqiang]South China Univ Technol, Sch Mech & Automot Engn, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Peoples R China
[ 4 ] [Li, Xiaoqiang]South China Univ Technol, Sch Mech & Automot Engn, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Peoples R China
[ 5 ] [Zhang, Yalong]Paris Saclay Univ, ICMMO, UMR CNRS 8182, SP2M, F-91405 Orsay, France
[ 6 ] [Ji, Vincent]Paris Saclay Univ, ICMMO, UMR CNRS 8182, SP2M, F-91405 Orsay, France
[ 7 ] [Lu, Feng]ZhengZhou Electromech Engn Res Inst, Zhengzhou 450015, Peoples R China
[ 8 ] [Lai, Fuqiang]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350108, Peoples R China
[ 9 ] [Liu, Haipeng]Inner Mongolia First Machinery Grp Co Ltd, Baotou 014032, Peoples R China

Reprint 's Address：

赖福强
[Qu, Shengguan]South China Univ Technol, Sch Mech & Automot Engn, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Peoples R China;;[Lai, Fuqiang]South China Univ Technol, Sch Mech & Automot Engn, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Peoples R China

Email：

qusg@scut.edu.cn |
laifuqiang@fzu.edu.cn

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