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Influence of Tempering Process on Mechanical Properties of 00Cr13Ni4Mo Supermartensitic Stainless Steel
作者姓名:Zou De-ning  HAN Ying  ZHANG Wei  
作者单位:西安建筑科技大学冶金工程学院
基金项目:Item Sponsored by Special Project of Shaanxi Education Department of China(07JK309); Xi′an University of Architecture and Technology of China(JC0714)
摘    要:To investigate the influence of tempering process on microstructural evolutions and mechanical properties of 00Cr13Ni4Mo supermartensitic stainless steel(SMSS),specimens were tempered in the temperature range of 520-720 ℃ for 3 h followed by air cooling and an optimized tempering temperature was chosen to prolong holding time from 3 to 12 h.After heat treatments,microstructure examination was conducted by scanning electron microscope,X-ray diffraction examinations,hardness measurements and tensile tests.The results revealed that the superior mechanical properties were achieved by quenching at 1040 ℃ for 1 h+water cooling and tempering at 600 ℃ for 3 h+air cooling.Increasing isothermal tempering time could improve the toughness notably.It was believed that the property was correlated with the microstructure of tempered lath martensite and retained austenite.More retained austenite content is beneficial to the higher toughness of the SMSS.

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收稿时间:2009-7-16

Influence of Tempering Process on Mechanical Properties of 00Cr13Ni4Mo Supermartensitic Stainless Steel
Zou De-ning,HAN Ying,ZHANG Wei,et al.Influence of Tempering Process on Mechanical Properties of 00Cr13Ni4Mo Supermartensitic Stainless Steel[J].Journal of Iron and Steel Research,2010,17(8):50-54.
Authors:ZOU De-ning  HAN Ying  ZHANG Wei  FANG Xu-dong
Affiliation:1. School of Metallurgy and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi,China
2. School of Metallurgy and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi,China State Key Laboratory of Advanced Stainless Steel Materials, Taiyuan 030003, Shanxi, China
3. State Key Laboratory of Advanced Stainless Steel Materials, Taiyuan 030003, Shanxi, China
Abstract:To investigate the influence of tempering process on microstructural evolutions and mechanical properties of 00Cr13Ni4Mo supermartensitic stainless steel (SMSS), specimens were tempered in the temperature range of 520-720 ℃ for 3 h followed by air cooling and an optimized tempering temperature was chosen to prolong holding time from 3 to 12 h. After heat treatments, microstructure examination was conducted by scanning electron microscope,X-ray diffraction examinations, hardness measurements and tensile tests. The results revealed that the superior mechanical properties were achieved by quenching at 1040 ℃ for 1 h+water cooling and tempering at 600 ℃ for 3 h+air cooling. Increasing isothermal tempering time could improve the toughness notably. It was believed that the property was correlated with the microstructure of tempered lath martensite and retained austenite. More retained austenite content is beneficial to the higher toughness of the SMSS.
Keywords:supermartensitic stainless steel  tempering  mechanical properties  retained austenite
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