Effect of cryogenic treatment on microstructure, mechanical and wear behaviors of AISI H13 hot work tool steel |
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Authors: | Mahdi Koneshlou Kaveh Meshinchi Asl Farzad Khomamizadeh |
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Affiliation: | aDepartment of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran, Iran;bSchool of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA |
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Abstract: | This paper focuses on the effects of low temperature (subzero) treatments on microstructure and mechanical properties of H13 hot work tool steel. Cryogenic treatment at −72 °C and deep cryogenic treatment at −196 °C were applied and it was found that by applying the subzero treatments, the retained austenite was transformed to martensite. As the temperature was decreased more retained austenite was transformed to martensite and it also led to smaller and more uniform martensite laths distributed in the microstructure. The deep cryogenic treatment also resulted in precipitation of more uniform and very fine carbide particles. The microstructural modification resulted in a significant improvement on the mechanical properties of the H13 tool steel. |
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Keywords: | Metals (A) Structural material (A) Mechanical properties (C) Phase transitions (C) Tribology (F) |
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