期刊
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
卷 16, 期 5, 页码 56-60出版社
SPRINGER
DOI: 10.1016/S1006-706X(10)60011-8
关键词
H13; microstructure; homogenization; impact toughness; isotropy
资金
- National Key Technology Research and Development Program of China [2007BAE51B04]
The as-cast microstructure 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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