[1]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,2015,38(4):15-20.[doi:1001-3938(2015)04-0015-06]
 HOU Yang,ZHANG Xiaoyong,LI Bowen.Influence of Quenching Temperature on Microstructure and Properties of X90 Pipeline Steel[J].,2015,38(4):15-20.[doi:1001-3938(2015)04-0015-06]
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终冷温度对X90管线钢组织和性能的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
38
期数:
2015年第4期
页码:
15-20
栏目:
试验与研究
出版日期:
2015-04-28

文章信息/Info

Title:
Influence of Quenching Temperature on Microstructure and Properties of X90 Pipeline Steel
文章编号:
1001-3938(2015)04-0015-06
作者:
侯 阳张骁勇李博文
(西安石油大学 材料科学与工程学院,西安 710065)
Author(s):
HOU Yang ZHANG Xiaoyong LI Bowen
(School of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China)
关键词:
X90管线钢终冷温度组织和性能
Keywords:
X90 pipeline steel quenching temperature microstructure and properties
分类号:
TG142.1
DOI:
1001-3938(2015)04-0015-06
文献标志码:
A
摘要:
利用力学性能测试和材料显微分析等试验技术,研究了终冷温度对X90管线钢组织与性能的影响规律。研究表明,通过在线热处理工艺,X90管线钢可获得贝氏体+马氏体/奥氏体(B+M/A)双相组织。随着终冷温度的上升,试验钢的贝氏体含量降低,马氏体/奥氏体含量增加,导致材料屈服强度下降,塑性升高。当终冷温度为350 ℃时,试验钢的强韧性较高,组织以贝氏体为主。B+M/A双相组织使得试验钢的屈强比为0.90,均匀伸长率为19.5%,形变强化指数为0.11,满足大变形管线钢的使用要求。
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.

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备注/Memo

备注/Memo:
收稿日期:2015-01-05
作者简介:侯阳(1989—),男,陕西咸阳人,硕士,主要从事金属材料热处理及其组织性能研究工作。
更新日期/Last Update: