Effect of the High-Temperature Deformation on the Ms Temperature in a Low C Martensitic Stainless Steel

被引：12

作者：

Alvarado-Meza, M. A. ^{[1
]}

Garcia-Sanchez, E. ^{[1
]}

Covarrubias-Alvarado, O. ^{[2
]}

Salinas-Rodriguez, A. ^{[3
]}

Guerrero-Mata, M. P. ^{[1
]}

Colas, R. ^{[1
,4
]}

机构：

[1] Univ Autonoma Nuevo Leon, FIME, Nuevo Leon, Monterrey, Mexico

[2] Frisa Aerosp SA CV, Santa Catarina, Mexico

[3] Ctr Invest & Estudios Avanzados, Unidad Saltillo, Saltillo, Coahuila, Mexico

[4] Univ Autonoma Nuevo Leon, CIIDIT, Nuevo Leon, Monterrey, Mexico

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2013年 / 22卷 / 02期

关键词：

cooling rate; deformation; dilatometry; martensitic transformation; START TEMPERATURE; AUSTENITIZING TEMPERATURE; TRANSFORMATION; PHASE; ALLOY; KINETICS; MICROSTRUCTURE; DILATOMETRY;

D O I：

10.1007/s11665-012-0258-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of cooling rate and plastic deformation at 1100 degrees C on the start of the austenite-to-martensite transformation in a low carbon Fe-12Cr stainless steel were investigated by dilatometry and thermal analysis of pre-strained samples. The experimental M-s was found constant (397.2 degrees C) for cooling rates between 15 and 30 degrees C/min. Outside this range, the M-s apparently decreases as the cooling rate decreases below 15 degrees C/min or increases above 30 degrees C/min. An overall average value of 380.9 +/- 11.8 degrees C was observed within the complete range of cooling rates investigated (8-40 degrees C/min). This value is 50 degrees C higher than that predicted from the chemical composition of the steel and Andrews' equation for M-s. Prior plastic deformation of austenite at 1100 degrees C increases the M-s temperature and broadens the martensitic domain (M-f-M-s). This effect increases as the magnitude of the applied pre-strain increases.

引用

页码：345 / 350

页数：6

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