The mechanical properties, microstructure and thermal stability of hot rolled pure W and W-0.5 wt%ZrC alloy manufactured using the same technology are systematically studied. The results of Vickers hardness and tensile tests show that the W-0.5 wt%ZrC alloy has a higher hardness, ultimate tensile strength, ductility and thermal stability compared to pure W. The recrystallization temperature of W-0.5 wt%ZrC alloy is about 1300 °C which is 100 °C higher than that of hot rolled pure W (1200 °C). The ductile to brittle transition temperature (DBTT) of W-0.5 wt%ZrC alloy is 50 °C lower than that of the rolled pure tungsten. The above results indicate that at the fully same fabrication technology, the trace ZrC does improve the mechanical properties and thermal stability of W. The possible micro-mechanisms were investigated and proposed.

系统地研究了使用相同技术生产的热轧纯W和W-0.5 wt％ZrC合金的力学性能，显微组织和热稳定性。维氏硬度和拉伸试验的结果表明，与纯W相比，W-0.5 wt％ZrC合金具有更高的硬度，极限拉伸强度，延展性和热稳定性。W-0.5wt％ZrC合金的重结晶温度约为1300 °C比热轧纯W（1200°C）高100°C。W-0.5 wt％ZrC合金的韧性至脆性转变温度（DBTT）比轧制纯钨低50°C。以上结果表明，在完全相同的制造技术下，痕量ZrC确实改善了W的机械性能和热稳定性。研究并提出了可能的微观机理。