摘要
在三种钨含量的Ｗ一Ｎｉ一Ｆｅ合金变形强化过程中，研究了变形量和力学性能与显微组织之间的关系。试验结果表明：随着钨合金变形量的增加，变形合金的强度和硬度亦增加，当变形量超过１５％后，高钨含量合金的变形强化作用逐渐减小。在变形合金的显微组织中，钨颗粒沿棒料轴向明显拉长，同时解理断裂成为断口的主要形式，并显现出钨合金断面上的滑移带。本文还讨论了变形合金在真空下，最佳调质退火温度和两相钨合金的形变特点、变形机制等。
The correlation among the degree of reduction,mechanical properties and microstructure of three W-Ni-Fe alloys with different W contents has been in-vestigated in deformation strengthening process.The experimental results showed that the strength and hardness of the deformed alloys increased with the degree of deformation. Moreover,the deformation strength-ening effect of the higher W content decreased as the deformation was higher than 15 %,and the W grains were alongated along the longitudinal direction in the deformed alloys. The cleavage failur across W grains became the main mode of fracture and the slip bands emerged on the fracture face.The optimal temperature of vacuum annealing of deformed alloys,and the char-acteristics and mechanism of deformation of biphase W alloys have been discussed in this paper as well.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1995年第1期29-33,共5页
Journal of Iron and Steel Research
关键词
高比重钨合金
变形强化
力学性能
显微组织
high density W alloy deformation strengthening mechanical property deformation mechanism microstucture
