ЭП741粉末合金中的缺陷对力学性能的影响

徐磊, 李若辰, 田晓生, 卢正冠

Influence of Defects in ЭП741 Alloy Powder on Mechanical Properties of Alloys Prepared by Hot Isostatic Pressing Process

XU Lei, LI Ruochen, TIAN Xiaosheng, LU Zhengguan

表1 ЭП741预合金粉末和粉末变形合金的主要化学成分及杂质含量

Table 1 Chemical compositions and impurity levels of ЭП741 pre-alloyed powders and deformed PM alloy (mass fraction, %)

Material H N O W Mo Al Ti Nb Hf Co Cr Si Ni VIGA powder 0.0002 0.012 0.0074 4.08 3.93 5.05 1.69 2.39 0.23 16.2 9.08 0.10 Bal. PREP powder < 0.0015 < 0.0020 0.0060 5.58 3.94 5.09 1.82 2.62 0.31 16.0 8.88 0.03 Bal. Deformed PM alloy < 0.0001 0.0005 0.0037 5.63 4.05 5.18 1.84 2.59 0.24 16.2 9.11 < 0.10 Bal.