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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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摘要

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结构和机械性能的研究。 铁,铝和硼粉末的元素粉末已被用作MA的起始原料,并混合,得到0%Al + 0〜5的所需组合物,%B.硼加成导致精细研磨的粉末并改善机械性能 Fe-40在%Al紧凑型。 用3at %b的%Al粉末在0%b的%Al粉末与WC粉末混合并在1373-1473KK的脉冲电流烧结过程中混合并在1373-1473k中合并.3,%B加入的Feal-Sovol%WC具有高维氏硬度1230HV 和横向破裂强度1.77 GPA,而B添加的FEAL-5O Vol%WC分别具有1080HV和1.10GPa。 这是由改善WC斑块在Feal基质中的分散来引起的。

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