理化检验-物理分册2025，Vol.61Issue(2)：40-43,4.DOI:10.11973/lhjy-wl240016
93WNiFe钨合金铆钉顶铁断裂原因
Reasons for fracture of 93WNiFe tungsten alloy rivet top iron
陈礼雪 1刘永恒 1刘体玲1
作者信息
- 1. 中航贵州飞机有限责任公司,安顺 561000
- 折叠
摘要
Abstract
The small head of the 93WNiFe tungsten alloy rivet top iron broke during operation.The reasons for the fracture of the top iron were analyzed using macroscopic observation,chemical composition analysis,scanning electron microscopy and energy spectrum analysis,metallographic examination,density testing,hardness testing.The results show that the fracture property of tungsten alloy top iron was brittle fracture,and the crack originated from the root of the R angle at the working small head of the top iron,where the cross-section changed and promoted crack initiation.During the heat treatment of tungsten alloy,incomplete liquid-phase sintering resulted in small tungsten particles and the lack of a firmly bonded network like bonding phase between particles,led to a decrease in the bonding strength of the internal interface of the alloy material.When the alloy was subjected to stress,microcracks propagated from the grain interface with weaker bonding strength,ultimately led to the fracture of the top iron.关键词
93WNiFe钨合金/铆钉顶铁/脆性断裂/黏结相/界面结合强度Key words
93WNiFe tungsten alloy/rivet top iron/brittle fracture/bonding phase/interface bonding strength分类
通用工业技术引用本文复制引用
陈礼雪,刘永恒,刘体玲..93WNiFe钨合金铆钉顶铁断裂原因[J].理化检验-物理分册,2025,61(2):40-43,4.
