Previous experimental studies in the Mo-TiC-ZrC-C (TZM) alloy have shown the existence of secondary phases around the composition TiC, ZrC, TiO₂, ZrO₂ and ZrTiO₄. No research about the interface of secondary phases and Mo matrix was indicated. We characterized the different secondary phases influence on the structure and mechanical properties by the mismatch and electron density. And discovered that ZrTiO₄ has largest lattice misfit and electron density, contributing to better strengthening and toughening of TZM alloy. The ZrTiO₄ interface bonding strength is superior to the other secondary phases. This new understanding opens opportunities for designing high strengthening-toughening Mo alloy.

先前在Mo-TiC-ZrC-C（TZM）合金中进行的实验研究表明，在成分TiC，ZrC，TiO ₂，ZrO ₂和ZrTiO ₄周围存在次级相。没有关于二次相与钼基体界面的研究。我们通过失配和电子密度表征了不同的次级相对结构和机械性能的影响。并发现ZrTiO ₄具有最大的晶格失配和电子密度，有助于TZM合金更好地增强和增韧。ZrTiO ₄界面结合强度优于其他次级相。这种新的认识为设计高强度增韧钼合金打开了机会。