Ductility enhancement by boron addition in Co–Al–W high-temperature alloys
Ductility enhancement by boron addition in Co–Al–W high-temperature alloys
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DOI：
10.1016/j.scriptamat.2009.05.037
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发表时间：
2009-09
影响因子：
6
通讯作者：
K. Shinagawa;T. Omori;K. Oikawa;R. Kainuma;K. Ishida
中科院分区：
文献类型：
--
作者：
K. Shinagawa;T. Omori;K. Oikawa;R. Kainuma;K. Ishida
通过力学性能测试，研究了几种不同Co 3（Al，W）-γ′相体积分数的无硼和掺硼Co-Al-W高温合金在980°C以下不同温度下的力学性能。虽然晶界断裂发生在无B的合金，添加少量的B显着改善的延展性。强度的正温度依赖性不仅与γ′相的体积分数有关，还与B的加入量有关。
The mechanical properties of several B-free and B-doped Co–Al–W superalloys with different volume fractions of the Co3(Al,W)-γ′ phase were examined by mechanical tests at various temperatures up to 980°C. Although grain boundary fracture occurred in the B-free alloys, the addition of a small amount of B drastically improved the ductility. It was also confirmed that the positive temperature dependence of strength was strongly affected not only by the volume fraction of the γ′ phase, but also by the addition of B.