理化检验：物理分册2012，Vol.48Issue(12)：818-820,827,4.
胶接绝缘钢轨用10．9级高强度螺栓断裂分析
Fracture Analysis on 10.9 Grade High Strength Bolts for Glued Insulated Rail
摘要
Abstract
A small amount of high strength bolts for glued insulated rail on turonout of passenger line fractured after service for about one year.By means of macro analysis,chemical compositions analysis,mechanical properties testing,metallographic examination,SEM fracture observation and so on,the fracture reason of the bolts was analyzed.The results show that the main reason for fracutre of the high strength bolts was attributed to the one-step temper brittleness,and a little amount of upper bainite which formed during quenching accelerated the fracture.Finally improvement measures were put forward.关键词
高强度螺栓/断裂/第一类回火脆性/上贝氏体Key words
high strength bolt/fracture/one-step temper birttleness/upper bainite分类
矿业与冶金引用本文复制引用
杨含,冀妮..胶接绝缘钢轨用10．9级高强度螺栓断裂分析[J].理化检验：物理分册,2012,48(12):818-820,827,4.
