A Co–Cr–Ni–W–C alloy was manufactured and cold-rolled to investigate the effect of the latter. Its microstructure, precipitates, and mechanical properties are presented. An M₆C carbide, Co₃W intermetallic compound and α-Co matrix were selected as the main phase constituents. During cold rolling, the alloy was deformed mainly by dislocation slipping at a small reduction, but some microtwins were formed in the matrix. When the reduction increased up to 20%, grains were elongated, and twinning became the main deformation route. When the reduction reached 40%, the alloy exhibited a typical microstructure with greatly elongated grains. The intersection of twinning lamellae lead to many cell-like substructures. The appropriate reduction of the alloy was of 15–20%, while the critical reduction made up 30%. If deformation exceeds the critical rolling reduction, cracks would originate in the alloy. With an increase in the rolling reduction, the alloy ductility decreases but the strength grows.

中文翻译：

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多次轧制Co-Cr-Ni-W-C合金

制造了Co-Cr-Ni-W-C合金并进行了冷轧，以研究后者的作用。介绍了其微观结构，析出物和力学性能。M ₆ C硬质合金Co ₃选择金属间化合物W和α-Co基体作为主要相成分。在冷轧过程中，合金主要是由于位错滑移以很小的减少量而变形，但基体中形成了一些微孪晶。当压下率提高到20％时，晶粒拉长，孪晶成为主要的变形途径。当还原率达到40％时，合金表现出典型的微观结构，晶粒大大拉长。孪生薄片的相交导致许多细胞状亚结构。合金的适当减少量为15％至20％，而临界减少量则为30％。如果变形超过临界轧制减少量，则裂纹会在合金中产生。随着轧制压下率的增加，合金的延展性降低，但强度提高。