Influence of Thermal Homogenization Treatment on Structure and Impact Toughness of H13 ESR Steel |
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Authors: | MA Dang-shen ZHOU Jian CHEN Zai-zhi ZHANG Zhong-kan CHEN Qi-an LI De-hui |
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Affiliation: | 1. Central Iron and Steel Research Institute, Beijing 100081, China 2. Jiangsu Tiangong Tool Co Ltd, Danyang 212312, Jiangsu, China |
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Abstract: | The as-cast microstrueture of H13 ESR ingot and the influence of high temperature diffusion treatment on the structure and impact toughness have been investigated. The results show that the dendrite arm spacing gradually becomes wide from the surface to the center of ingot, and the large primary carbide particles always exist in interdendritic segregation areas; by means of high temperature diffusion treatment of ingot prior to hot forging, the banded segregation is nearly eliminated, the annealed structure is more uniform and the isotropic properties have been improved remarkably. |
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Keywords: | H 13 mierostrueture homogenization impact toughness isotropy |
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