Effect of thermal cycles on ferrite content of austenitic stainless steel

被引：24

作者：

Chen, MH ^{[1
]}

Chou, CP ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Engn Mech, Hsinchu, Taiwan

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 1999年 / 4卷 / 01期

关键词：

D O I：

10.1179/stw.1999.4.1.58

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The properties of austenitic stainless steel weld metals are strongly influenced by the duplex structure of austenite and ferrite. The objective of the present study was to investigate the effect of thermal cycles on the ferrite content in austenitic stainless steel weld metal, and to explore the ferrite-austenite solid state transformation of austenitic stainless steel weld metal. The results indicate that the peak temperature, cooling rate, and number of thermal cycles have a significant effect on ferrite content in the austenitic stainless steel weld. As the cooling rate increases, or the number of thermal cycles decreases, the amount of retained ferrite is increased at room temperature. New delta ferrite phase can be formed if the reheating peak temperature is above the optimum gamma solvus temperature of austenitic stainless steel, nod this new delta ferrite can be retained under rapid cooling conditions.

引用

页码：58 / 62

页数：5

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