Variations in the positive temperature dependence of yield stress for L1₂ intermetallic compounds in pseudo-binary alloys with the composition of Co₃(Al, W)–Co₃Ti have been investigated. Polycrystalline L1₂ compounds in the pseudo-binary system with a Co₃(Al, W) to Co₃Ti composition ratio of approximately 1:3 and 1:9 were prepared. The temperature dependence of the yield stress ranging from 293 to 1273 K was determined. The onset temperature for the positive temperature dependence of yield stress for each compound is located between that of Co₃(Al, W) and Co₃Ti. The activation energies for the positive temperature dependence of these compounds are evaluated to be 47.0 and 43.6 kJmol^-1, respectively. The activation energies are also intermediate values between those of Co₃(Al, W) and Co₃Ti.

The composition dependence of the positive temperature dependence of yield stress is estimated from the physical properties of Co₃(Al, W) and Co₃Ti. Although the activation energies estimated for the present compounds are slightly different from the experimentally determined values, the temperature dependences of the experimentally determined yield stress are almost represented from the estimated parameters. The composition dependence of the positive temperature dependence of the yield stress can be predicted from the physical properties of the base compounds.

已经研究了成分为 Co ₃ (Al, W)-Co ₃ Ti 的准二元合金中L1 ₂金属间化合物屈服应力的正温度依赖性变化。制备了准二元体系中的多晶L1 ₂化合物，其Co ₃ (Al，W)与Co ₃ Ti的组成比约为1:3和1:9。确定了范围从 293 到 1273 K 的屈服应力的温度依赖性。每种化合物屈服应力的正温度依赖性的起始温度位于 Co ₃ (Al, W) 和 Co _{3 之间}蒂。这些化合物的正温度依赖性的活化能被评估为分别为 47.0 和 43.6 kJmol ^-1。活化能也是介于 Co ₃ (Al, W) 和 Co ₃ Ti之间的中间值。

从Co ₃ (Al、W)和Co ₃ Ti的物理性质估计屈服应力的正温度依赖性的成分依赖性。尽管对本化合物估计的活化能与实验确定的值略有不同，但实验确定的屈服应力的温度依赖性几乎可以从估计的参数中得到体现。可以从基础化合物的物理性质预测屈服应力的正温度依赖性的组成依赖性。