EFFECT OF AUSFORMING ON MICROSTRUCTURE AND HARDNESS OF AISI H-13 TOOL STEEL MODIFIED WITH NIOBIUM

被引：0
|
作者：
ELIAS, CN
VIANA, CSDC
机构：
[1] Department of Mechanical Engineering and Materials Science, Instituto Militar de Engenharia, Rio de Janeiro
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 1992年 / 8卷 / 09期
关键词：
D O I：
10.1179/mst.1992.8.9.785
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work the relationship between the microstructure and the hardness of an AISI H-13 tool steel both with and without an addition of niobium was studied. Extensive investigation by direct observation using optical and electron microscopy was carried out. It was found that the deformation during ausforming introduces changes in the microstructure, such as high dislocation density and carbide precipitation, which affect the hardness of the steels. The results show that the partial substitution of vanadium by niobium does not lead to any significant change in the hardness of the hot work tool steels investigated.
引用
收藏
页码：785 / 789
页数：5
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