Hydrogen Absorption and Desorption during Heat Treatment of AISI 4140 Steel

被引：5

作者：

Zhang, Ming-da ^{[1
,2
]}

Wang, Mao-qiu ^{[1
]}

Dong, Han ^{[1
]}

机构：

[1] Cent Iron & Steel Res Inst, Natl Engn Res Ctr Adv Steel Technol, Beijing 100081, Peoples R China

[2] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2014年 / 21卷 / 10期

关键词：

steel; hydrogen absorption; heat treatment; thermal desorption spectrometry; HIGH-STRENGTH STEEL; EMBRITTLEMENT; DEGRADATION; CRACKING;

D O I：

10.1016/S1006-706X(14)60167-9

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Hydrogen plays an important role in the formation of quench cracks of structural steels. To clarify hydrogen absorption and desorption during heat treatment of AISI 4140 steel, thermal desorption spectrometry (TDS) analysis was carried out for the specimens in the as-rolled, as-quenched, and quenched and tempered conditions. Results show that hydrogen content increased from 0.127 X 10(-6) in the as-rolled specimen to 0.316 X 10(-6) in the as-oil-quenched specimen. After tempering at 200 degrees C, the hydrogen content in the oil-quenched specimen decreased to 0.155 X 10(-6), and the peak temperature of hydrogen desorption increased from 200 to 360 degrees C. From the dependence of hydrogen content in the as-quenched specimens on austenitizing time, it can be deduced that hydrogen absorption occurs during austenitizing. The simulation of hydrogen absorption contributes to a better understanding on the distribution of hydrogen during the heat treatment in structural steels.

引用

页码：951 / 955

页数：5

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