Influence of Mn Alloying on the Mechanical Properties of Quenched and Partitioned Fe-13Cr-0.47C Stainless Steel
In order to study the efficiency of martensite fractions below 50 vol % on the stabilization of austenite during quenching and partitioning (Q&P) processing,tensile elongation of a Fe-13Cr-0.47C (mass %) stainless steel Q&P processed to have a microstructure consisting of 44 vol % martensite was determined at temperatures between room temperature and 200 °C.The applied Q&P cycle was simple as it involved quenching to room temperature followed by partitioning at 450 °C.Tensile elongation was very low at room temperature but progressively increased at higher temperatures.After the addition of 3 mass %Mn to the base composition,the martensite start temperature was reduced almost to room temperature and the microstructure remained almost fully austenitic in the quenching step.Therefore,no stabilization due to partitioning was expected for the austenite in the Mn-added steel.Comparison of the tensile elongations for the base and Mn-added variants indicated a similar temperature dependence although tensile elongation levels were significantly lower for the base composition which contained a higher martensite fraction.The similar temperature dependence of tensile elongation indicated similar austenite stabilities and the negligible stabilization of austenite in the presence of 44 vol % martensite in the partitioning step.
Q&P processing tensile properties tensile temperature austenite stability
HUANG Qiuliang VOLKOVA Olena BIERMANN Horst MOLA Javad
Institute of Iron and Steel Technology, Technische Universit(a)t Bergakademie Freiberg, 09599 Freibe Institute of Materials Engineering, Technische Universit(a)t Bergakademie Freiberg, 09599 Freiberg,
国际会议
成都
英文
667-671
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）