Properties of P91 Steel Steam Conduit Pipe with low Hardness in a 600 MW Power Plant

被引：0

作者：

Zhao, Yongfeng ^{[1
]}

Cai, Hongsheng ^{[1
]}

Wang, Liangwei ^{[2
]}

Geng, Jinfeng ^{[1
]}

Ma, Dongfang ^{[1
]}

Niu, Yujing ^{[1
]}

Liu, Yongcheng ^{[1
]}

机构：

[1] State Grid Henan Elect Power Res Inst, Zhengzhou 450052, Henan Province, Peoples R China

[2] Guodian Xingyang Coal Elect Integrat Co Ltd, Zhengzhou 450100, Peoples R China

来源：

CHEMICAL, MATERIAL AND METALLURGICAL ENGINEERING III, PTS 1-3 | 2014年 / 881-883卷

关键词：

P91; steel; heat treatment; conventional mechanical property;

D O I：

10.4028/www.scientific.net/AMR.881-883.1293

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The hardness of P91 for HP loop pipes was lower than required in standard in a power plant which has run for about 35,000 hours. The experiments about Metallographic and conventional mechanical properties were done in this paper. The results show that the metallographic of P91 with low hardness was abnormal, creep damage was not found, and mechanical properties were poor. So the HP loop pipe with low hardness can't continue to be used safely. After re-heat treatment for HP loop pipe with low hardness,the results about metallographic and mechanical tests show that the performance of the pipe is good,and can continue to be used.

引用

页码：1293 / +

页数：2