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Materials and Manufacturing Processes Volume 25, 2010 - Issue 4: Sensors, Actuators, and Intelligent Processing
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Original Articles

Microstructure and Mechanical Properties of 0.63C-12.7Cr Martensitic Stainless Steel during Various Tempering Treatments

Yuli Lin Department of Mechanical Engineering, Chung Hua University, Hsinchu, Taiwan, ROCCorrespondence[email protected]
,
Chih-Chung Lin Department of Mechanical Engineering, Chung Hua University, Hsinchu, Taiwan, ROC
,
Tsung-Hsien Tsai Department of Mechanical Engineering, Chung Hua University, Hsinchu, Taiwan, ROC
&
Hong-Jen Lai Industrial Technology Research Institute, Hsinchu, Taiwan, ROC
Pages 246-248 | Received 21 Oct 2009, Accepted 29 Mar 2010, Published online: 30 Apr 2010
 
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Abstract

In this study, the microstructure and mechanical properties of 0.63C-12.7Cr martensitic stainless steel during various tempering treatments were investigated. Experimental results demonstrate that finely distributed primary carbides can be observed in 0.63C-12.7Cr martensitic stainless steel. It was also found that the measured hardness of 0.63C-12.7Cr martensitic stainless steel after 300°C tempered treatment for 60 minutes can still reach to 677Hv. The variation of measured hardness was found not significant during tempering treatments (200°C–500°C). Moreover, owing to lower concentration of C and Cr, the matensitic transformation temperature Ms can be increased to 96.4°C comparing to −127°C of SUS440C materials.

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