Aging Precipitates and Strengthening Mechanism of T122 Boiler Steel

被引：22

作者：

Bao Han-sheng ^{[1
]}

Cheng Shi-chang ^{[1
]}

Liu Zheng-dong ^{[1
]}

Tan Shu-ping ^{[1
,2
]}

机构：

[1] Cent Iron & Steel Res Inst, Inst Struct Mat, Beijing 100081, Peoples R China

[2] Harbin Inst Technol, Sch Astronaut, Harbin 150001, Heilongjiang, Peoples R China

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2010年 / 17卷 / 02期

关键词：

T122 heat resistant steel; strengthening; precipitate; substructure; dislocation;

D O I：

10.1016/S1006-706X(10)60062-3

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

T122 steel has been used to produce superheater or reheater of ultra supercritical boilers. With the help of chemical phase extraction and microstructure characterization, the performance of aging precipitates of T122 steel, such as M23C6 carbide, Laves phase and MX phase was investigated, the strengthening mechanism of the steel was discussed, and the thermal yield stress of lath substructure, dislocations and precipitates of the steel were calculated. It was found that lath substructure and dislocations dominated the strengthening attribution and precipitation hardening went second to the strengthening attribution.

引用

页码：67 / 73

页数：7

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