Microstructure and fatigue properties of 17Cr2Ni2MoVNb gear steel after gas carburizing and low-pressure carburizing

被引：13

作者：

Xue, Yanjun ^{[1
]}

Yan, Yongming ^{[1
]}

Yu, Wenchao ^{[1
]}

Dong, Mingzhen ^{[1
,2
]}

Shi, Jie ^{[1
]}

Wang, Maoqiu ^{[1
]}

机构：

[1] Cent Iron & Steel Res Inst Co Ltd, Beijing 100081, Peoples R China

[2] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 167卷

关键词：

Gear steel; Gas carburizing; Low-pressure carburizing; Microstructure; Fatigue properties; INDUCED MARTENSITIC-TRANSFORMATION; RETAINED AUSTENITE; STRENGTH; BEHAVIOR;

D O I：

10.1016/j.ijfatigue.2022.107314

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this work, the microstructure and fatigue properties of the 17Cr2Ni2MoVNb gear steel after gas carburizing (GC) and low-pressure carburizing (LPC) were comparatively evaluated. The results showed that fewer carbides and a higher fraction of retained austenite (RA) were found in the carburized layer of the LPC specimens, as a result of the different quenching temperature. Rotating bending fatigue tests revealed that both the LPC and GC specimens had a fatigue limit of 980 MPa. Compared with the GC specimens, the LPC specimens had significantly higher fatigue strengths at a specific number of cycles under high cyclic stresses.

引用

页数：11

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