金属加工（热加工）Issue(4)：52-55,4.
14Cr17Ni2不锈钢锥形螺栓断裂分析
Fracture analysis of 14Cr17Ni2 stainless steel conical bolt
杨国兰 1杨玉川 1谭家栩 1田海燕 1潘红烨1
作者信息
- 1. 中国航发贵州黎阳航空动力有限公司 贵州贵阳 550014
- 折叠
摘要
Abstract
A conical bolt broke during shaking.The fracture property of the bolt belongs to intergranular brittle fracture through the macroscopic and microscopic observations of the fracture surface.Based on the metallographic structure and Vickers hardness test results,it is determined that the hardness of the bolt is related to the absence of ferrite in its structure.Combining its energy spectrum,fracture properties,and tempering temperature,Infer that the bolt may have temper embrittlement.It is proved that the sample without ferrite has greater brittleness after tempering at 570℃,and the fracture surface is intergranular brittle fracture by artificially breaking the 14Cr17Ni2 stainless steel sample with and without ferrite tempered at 570℃,the fracture surface of the sample with ferrite is mainly quasi cleavage.Finally confirmed the fracture cause of the conical bolt was due to the interaction of the tempering temperature being in the tempering brittleness range and no ferrite in the structure.关键词
14Cr17Ni2不锈钢/螺栓/沿晶脆断/回火脆/铁素体Key words
14Cr17Ni2 stainless steel/bolt/intergranular brittle fracture/temper embrittlement/ferrite引用本文复制引用
杨国兰,杨玉川,谭家栩,田海燕,潘红烨..14Cr17Ni2不锈钢锥形螺栓断裂分析[J].金属加工（热加工）,2024,(4):52-55,4.
