中文摘要：

为了强化W/Cu界面,通过在钨骨架中熔渗掺杂有Zr、Cr的铜合金,制备了WCu复合材料。研究了掺杂Zr、Cr对WCu复合材料的力学性能（包括弯曲强度及冲击韧性）及抗热震性能的影响。结果表明,少量的掺杂Zr、Cr可以有效提高WCu复合材料的弯曲强度及冲击韧性。随着热震温度的提高,WCu复合材料的弯曲强度降低,而Zr、Cr的掺杂可明显提高WCu复合材料的抗热震性能。

英文摘要：

WCu composites were fabricated by infiltrating Cu alloys doped with Zr and Cr into W skeleton in order to strengthen the W/Cu interfaces. The effects of Zr and Cr on the mechanical properties including flexural strength and impact toughness, and thermal shock resistance of WCu composites were investigated. The results show that the addition of a small amount of Zr and Cr can increase the flexural strength and the impact toughness of WCu composites. With the increase of thermal shock temperature, the flexural strength of WCu composites decreases. However, the addition of Zr and Cr in WCu composite can reduce the effect of thermal shock on mechanical properties obviously, improving the thermal shock resistance of WCu composites.