摘要
选用65WNiCu合金作为研究对象,进行了变形强化研究,对不同变形量的合金分别作了抗拉强度、伸长率测试,考察了变形量对合金力学性能的影响,并采用SEM观察了变形量30%时合金的微观组织形貌和室温拉伸断口。结果表明:65WNiCu合金经变形强化后钨颗粒被拉长,粘结相均匀分布在钨颗粒周围;随着变形量增加合金的抗拉强度明显增高,伸长率逐渐降低;当合金的变形量达到30%时,抗拉强度从HIP态的750MPa提高到890MPa,伸长率由18.5%降低到7.5%,实验证明变形强化对提高65WNiCu合金的抗拉强度效果明显。
The microstructure and mechanical properties of 65 WNiCu alloy was studied. The results show that increase of deformation levels leads to fibrous microstructures, strength improvement and elongation reduction. At 30% deformation level, tensile strength of 65WNiCu increase from sintered 750 MPa to swaged 890 MPa, the elongation decrease from sintered 18.5% to swaged 7.5%. The result shows that swage deformation is very useful to improve the tensile strength of 65WNiCu alloys.
出处
《粉末冶金工业》
CAS
北大核心
2012年第5期9-12,共4页
Powder Metallurgy Industry
关键词
W—Ni—Cu合金
变形强化
力学性能
W-Ni-Cu alloys
deformation strengthening
mechanical properties
