Effects of thermomechanical treatment on microstructure and mechanical properties of T91 steel

被引：0
|
作者：
Ning, Baoqun [1 ,2 ]
Liu, Yongchang [1 ]
Xu, Ronglei [1 ]
Yang, Liushuan [3 ]
机构：
[1] College of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
[2] School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300191, China
[3] Department of Materials Science and Engineering, Pingdingshan Institute of Technology, Pingdingshan 467001, China
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2008年 / 22卷 / 02期
关键词：
Austenite - Carbon nitride - Mechanical properties - Metallographic microstructure - Optical microscopy - Precipitates - Quenching - Recrystallization (metallurgy) - Strength of materials - Tensile testing - Thermomechanical treatment - Transmission electron microscopy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The thermomechanical treatment processing was simulated by thermomechanical simulation instrument for the T91 ferritic heat-resistant steel. The effects of immediate quenching after different degrees of deformation in 650-850°C, locating in the austenite non-recrystallization region, on the microstructural formation and mechanical properties of T91 steel were studied. Optical microscopical and TEM observations showed that the adopted thermomechanical treatment could not only refine structure but also form more nano-sized MX carbonitride precipitates, as compared to the specimen after conventional normalizing and tempering treatment. Tensile tests showed that the thermomechanical treatment could effectively increase the strength of T91 steel which increases service temperature.
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页码：191 / 196
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