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Effect of boron addition on structure and mechanical properties of FeAl-WC composites

机译：硼添加对FeAl-WC复合材料结构和力学性能的影响

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Effect of boron addition on structure and mechanical properties of FeAl-WC have been investigated. Elemental powders of iron, aluminum and boron powders have been used as starting materials for MA and mixed to give the desired composition of Fe-40 at% Al +0～5 at% B. Boron addition leads to fine milled powders and improves mechanical properties of Fe-40 at% Al compacts. Milled Fe-40 at% Al powders with 3 at% B have been blended with WC powders and consolidated using pulse current sintering process at 1373 - 1473 K. 3 at% B-added FeAl-SOvol% WC has had high vickers hardness 1230 Hv and transverse rupture strength 1.77 GPa, while no B-added FeAl-5O vol% WC has had 1080 Hv and 1.10 GPa respectively. This is caused by improvement of dispersion of WC paricles in FeAl matrix.
机译：研究了硼添加对FeAl-WC结构和力学性能的影响。铁，铝和硼粉末的单质粉末已用作MA的原料，并混合以得到所需的Fe-40 at％Al + 0〜5 at％B的成分。硼的添加可产生细粉并改善机械性能Fe-40 at％Al压块。已将已研磨的Fe-40 at％Al粉末与3 at％B的粉末与WC粉混合，并在1373-1473 K处使用脉冲电流烧结工艺进行固结。添加3 at％B的FeAl-SOvol％WC的维氏硬度为1230 Hv横向断裂强度为1.77 GPa，而没有添加B的FeAl-5O vol％WC分别具有1080 Hv和1.10 GPa。这是由于改善了WC颗粒在FeAl基体中的分散性。

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