理化检验-物理分册2017，Vol.53Issue(9)：671-674,4.DOI:10.11973/lhjy-wl201709013
18CrNiMo7-6钢齿轮轴开裂失效分析
Failure Analysis on Cracking of the 18CrNiMo7-6 Steel Gear Shaft
吴佳峻1
作者信息
- 1. 江苏金源高端装备股份有限公司,常州 213376
- 折叠
摘要
Abstract
The 18CrNiMo7-6 steel gear shaft cracked along the axial direction during storing after machining processing.The cracking reasons of the gear shaft were analyzed by methods of macroscopic analysis,chemical composition analysis,depth measurement of carburized layer,scanning electron microscopy observation,energy analysis and so on.The results show that:there were some particles of aluminium oxides mixed into the raw material of the gear shaft due to the improper smelting process;the particles were banded during forging and drawing process,which destroyed the continuity of the material and resulted in the stress concentration;under the action of large residual stress,delayed cracking occurred to the gear shaft.关键词
18CrNiMo7-6钢/齿轮轴/氧化铝夹渣/夹杂物条带/应力集中/开裂Key words
18CrNiMo7-6 steel/gear shaft/aluminium oxide particle slag/inclusion band/stress concentration/cracking分类
矿业与冶金引用本文复制引用
吴佳峻..18CrNiMo7-6钢齿轮轴开裂失效分析[J].理化检验-物理分册,2017,53(9):671-674,4.
