焊管Issue(4)：15-20,6.
终冷温度对X90管线钢组织和性能的影响
Influence of Quenching Temperature on Microstructure and Properties of X90 Pipeline Steel
侯阳 1张骁勇 1李博文1
作者信息
- 1. 西安石油大学 材料科学与工程学院，西安 710065
- 折叠
摘要
Abstract
The influence rule of the quenching temperature on X90 pipeline steel microstructure and properties was studied through mechanical property test and material microscopic analysis technology etc. The results indicated that (B+M/A) dual-phases microstructure can be obtained through online heat treatment process. With the increasing of quenching temperature, the content of bainite decreases and content of martensite/austenite increases, which lead to the decrease of yield strength and increases of plasticity. When the quenching temperature is 350 ℃, the strength and toughness of experimental steel are higher, and the microstructure mainly consists of bainite. This (B+M/A) dual-phase structure makes the yield ratio 0.90, uniform elongation 19.5% and strain hardending index 0.11 for the experimental steel, all these meet the technical requirements for large deformation pipeline steel.关键词
X90管线钢/终冷温度/组织和性能Key words
X90 pipeline steel/quenching temperature/microstructure and properties分类
矿业与冶金引用本文复制引用
侯阳,张骁勇,李博文..终冷温度对X90管线钢组织和性能的影响[J].焊管,2015,(4):15-20,6.
