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Improved impact toughness of 13Cr martensitic stainless steel hardened by laser |
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| Authors: | L W Tsay Y M Chang S Torng H C Wu |
| Affiliation: | (1) Institute of Material Engineering, National Taiwan Ocean University, 202 Keelung, Taiwan;(2) Materials and Electro-opties Research Division, Chung-Shan Institute of Science & Technology, 325 Lung Tan, Taiwan, Republic of China;(3) Power Research Institute, 238 Taipei, Taiwan, Republic of China |
| Abstract: | The impact toughness of AISI 403 martensitic stainless steel plate and laser-hardened specimens tempered at various temperatures were examined. Phosphorus was the primary residual impurity responsible for tempered embrittlement of this alloy. The experimental result also indicated that AISI 403 stainless steel was very sensitive to reverse-temper embrittlement. The improved impact toughness of the laser-hardened specimen was attributed to the refined microstructure in the laser-hardened zone. |
| Keywords: | impact toughness intergranular fracture laserhardening temper embrittlement |
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