Microstructural evolution and mechanical properties of Cr-Ru alloys
Microstructural evolution and mechanical properties of Cr-Ru alloys
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DOI：
10.1007/s11661-005-0172-6
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发表时间：
2005-03
期刊：
影响因子：
--
通讯作者：
Y. Gu;Y. Ro;T. Kobayashi;H. Harada
中科院分区：
文献类型：
--
作者：
Y. Gu;Y. Ro;T. Kobayashi;H. Harada
为了提高铬基合金的塑性和强度，制备了一系列Ru含量为3 ~ 30 at.制备了相应的力学性能测试板，研究了它们的显微组织演变和力学性能。合金的显微组织在6 ~ 20 at. Ru显示出共晶结构的迹象。然而，没有相应的低共熔反应表明在公布的Cr-Ru相图。在室温和1200 °C下，Cr-Ru合金的屈服强度随Ru含量的增加而增加。研究了Cr-3at.在室温下，含6at. %或更多的Ru显示出零拉伸伸长率。从微观组织和断裂行为两方面探讨了Cr-Ru合金的变形机制。
In an effort to enhance ductility and strength of Cr-base alloys, a series of Cr-Ru alloys with Ru contents ranging from 3 to 30 at. pct were made to study their microstructure evolution and mechanical properties. The microstructure of the alloys with 6 to 20 at. pct Ru showed signs of a eutectic structure. However, no corresponding eutectic reaction is indicated in the published Cr-Ru phase diagram. The yield strength of the Cr-Ru alloys increased with increasing Ru content at both room temperature and 1200 °C. The tensile ductility of Cr-3 at. pct Ru is about 1.5 pct at room temperature, while the alloys containing 6 at. pct or more Ru showed zero tensile elongation. The deformation mechanisms of the Cr-Ru alloys are discussed in terms of the microstructure and fracture behavior.