回火温度对P92钢组织性能的影响

华电技术 ›› 2013, Vol. 35 ›› Issue (3): 22-25.

回火温度对P92钢组织性能的影响

张丰收1，贠峰1，宋国营1，陈春辉2，李俊峰1

(1.河南华电金源管道有限公司，河南郑州 450051； 2.浙江省火电建设公司，浙江杭州 310160)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2013-03-25 发布日期:2013-03-25

Influence of tempering temperature on structure properties of P92 steel

ZHANG Fengshou1，YUN Feng1, SONG Guoying1, CHEN Chunhui2, LI Junfeng1

(1.Henan Huadian Jinyuan Pipeline Company Limited, Zhengzhou 450051, China; 2.Zhejiang Thermal Power Construction Company, Hangzhou 310160, China)

Received:1900-01-01 Revised:1900-01-01 Online:2013-03-25 Published:2013-03-25

摘要/Abstract

摘要： P92钢经过不同温度和冷却方式回火处理后，检测了其显微组织、硬度及力学性能的变化，研究了回火热处理对P92钢性能的影响。试验结果表明，P92钢在高温回火(830℃)时，其显微组织由马氏体逐渐转变为铁素体加碳化物，抗拉强度、冲击吸收能量没有降低，但硬度和屈服强度却明显降低(低于标准要求的下限值)。另外，在低于AC1线的高温回火时，冷却速度对材料性能及显微组织影响不大。

关键词: P92钢, 回火处理, 力学性能, 显微组织

Abstract: After T92 steel was tempered at different tempering temperature and by different cooling methods, the variations of properties of T92 steel, such as the microstructure, the hardness and the mechanical properties, were detected. The influence of the tempering treatment on the characteristics of P92 steel was researched. The experiment results show that after high temperature tempering (830℃), the microstructure of the T92 steel changed from martensite into ferrite and carbide gradually, the tensile strength and the shock absorbing energy of the steel did not reduce, but the hardness and the yield strength of the steel reduced obviously (lower than the lower limit value required by relevant standard). On the side, in high temperature tempering process below AC1 line, the cooling speed does not much impact the properties and the microstructure of the material.

Key words: P92 steel, tempering treatment, mechanical property, microstructure

张丰收;贠峰;宋国营;陈春辉;李俊峰. 回火温度对P92钢组织性能的影响[J]. 华电技术, 2013, 35(3): 22-25.

ZHANG Fengshou;YUN Feng;SONG Guoying;CHEN Chunhui;LI Junfeng. Influence of tempering temperature on structure properties of P92 steel[J]. Huadian Technology, 2013, 35(3): 22-25.

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