Investigation on the mechanical properties of WC–Fe–Cu hard alloys
Investigation on the mechanical properties of WC–Fe–Cu hard alloys
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DOI：
10.1016/j.jallcom.2015.01.300
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发表时间：
2015-05
影响因子：
6.2
通讯作者：
Zhenye Zhao;Jianwei Liu;Huaguo Tang;Xianfeng Ma;Wei Zhao
中科院分区：
文献类型：
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作者：
Zhenye Zhao;Jianwei Liu;Huaguo Tang;Xianfeng Ma;Wei Zhao
本研究选用不同Cu含量的Fe-Cu合金作为WC的粘结剂。研究了Cu含量和烧结温度对WC-Fe-Cu硬质合金力学性能的影响。WC-Fe-Cu硬质合金中添加0（用于对比）、0.5wt.%、1重量%，1.5重量百分比，2重量%和2.5重量%铜的粉末冶金加工。样品通过在不同温度（即1250、1300和1350 °C）下真空烧结1小时来制备。研究结果表明，Cu的加入有利于提高合金的致密度和抗弯强度，但对合金的硬度没有明显影响。硬质合金的横向断裂强度提高到最大值2217 MPa。因此，通过包含1.5wt.在1300 °C下烧结的Cu。
In the research, Fe–Cu alloys with various Cu contents were used as the binder metal of WC. An investigation has been carried out on the influence of Cu content and sintering temperature on the mechanical properties of WC–Fe–Cu hard alloys. The WC–Fe–Cu hard alloys with 0 (for comparison), 0.5 wt.%, 1 wt.%, 1.5 wt.%, 2 wt.% and 2.5 wt.% Cu were processed by powder metallurgy. The samples were prepared by vacuum sintering at various temperatures, viz. 1250, 1300 and 1350 °C for 1 h. The research results indicate that the addition of Cu was beneficial for increasing the relative density and transverse rupture strength without an appreciable influence on hardness. The transverse rupture strength of the hard alloy was improved to the maximum value of 2217 MPa. Consequently, the highest mechanical properties were obtained by the specimen including 1.5 wt.% of Cu sintered at 1300 °C.