摘要
研究了固溶淬火条件下Ｎｉ／Ｆｅ比（质量分数）对Ｗ－Ｎｉ－Ｆｅ高密度钨合金力学性能的影 响规律．拉伸测试表明．同溶淬火条件下 Ｗ－Ｎｉ－Ｆｅ合金的最佳Ｎｉ－Ｆｅ比发生偏移，随Ｎｉ／Ｆｅ比增 加，钨合金的强度和韧性同步提高，当镍铁比达到９／１时强度和韧性都达到最大值，其后合金的 强韧性随Ｎｉ－Ｆｅ比增加而同步降低．通过Ｘ射线和ＴＥＭ分析发现，缓冷条件下Ｗ－Ｎｉ－Ｆｅ合金 中有脆性β相析出，固溶淬火工艺能有效抑制β相析出．
The relationship between mechanical properties and nickel to iron ratios of W-Ni-Fe tungsten heavy alloys (WHAs) heat treated by solid-solution and quenching was studied. It was found that under solid- solution and quenching state the best nickel to iron ratio moved from 7/3 to 9/1. And it was also found that the tensile strength and ductility of resolutionized/quenched WHAs have the same changing tendency with incre- asing nickel to iron ratios, namely the mechanical properties increased with increasing nickel to iron ratios, re- aching the maximum when the ratio approached to 9/1, and then decreased as the ratios getting higher. X ray diffraction and TEM analysis showed that there were brittle β(WNi4) phase precipitated in slow-cooled after sintering WHAs, and that the solid-solution and quenching heat treatment was effective to inhibit the precipi- tation of WNi4.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2002年第1期38-40,共3页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助课题(No.59971007)
