The effect of boron liquid phase sintering on properties of Ni-, Mo- and Cr-alloyed structural steels

被引：25
|
作者：
Selecká, M
Salak, A
Danninger, H [1 ]
机构：
[1] Tech Univ Vienna, Inst Chem Technol Inorgan Mat, Vienna, Austria
[2] SAS, Inst Mat Res, Kosice, Slovakia
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2003年 / 141卷 / 03期
关键词：
powder metallurgy; boron; prealloyed powder; density; strength;
D O I：
10.1016/S0924-0136(03)00421-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Boron is evaluated as the best sintering enhancing element in terms of densifying the iron-based materials by formation the liquid phase. The influence of boron addition (up to 0.6%) on the density, microstructure formation and the strength of the different prealloyed powders were studied. The specimens were sintered at 1200 degreesC for 60 min in hydrogen. Boron addition caused an increase of specimen density and formation of a new microstructure type. Microstructural analysis showed an interaction of boron with matrix alloying elements. The formation of borides caused the increase of microhardness and hardness values of matrix. The higher density and microhardness expressed in higher strength of materials. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：379 / 384
页数：6
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