摘要
汽轮机转子等高温部件,长时间受到高温载荷作用,会产生蠕变疲劳损伤,严重危害机组的安全运行。通常,人们认为高温氧化膜的形成减缓了疲劳裂纹的萌生和扩展,具有良好的保护性。可有些学者却发现了相反的结果,真空或惰性气体下的蠕变疲劳性能要比空气中有氧存在时好,高温下更是如此。本文主要综述了高温氧化蠕变疲劳寿命的影响因素,以及高温氧化环境下蠕变疲劳损伤的机理。
The high temperature parts such as steam turbine rotor were damaged by creep fatigue under high temperature load for a long time, which seriously endangered the safe operation of the unit. In general, it was believed that the formation of high temperature oxide film slowed down the initiation and expansion of fatigue cracks and had good protection. Some scholars had found the opposite result, in the vacuum or inert gas creep fatigue performance than the existence of oxidation in the air was good, especially at high temperatures. In this paper, the factors in？uencing the creep fatigue life of high temperature oxidation and the mechanism of creep fatigue damage under high temperature oxidation environment were reviewed.
作者
崔璐
宋冬行
张吉鼎
CUI Lu SONG Dongxing ZHANG Jidin(College of Mechanical Engineering, Xi＇an Shiyou University, Xi＇an 710065, China)
出处
《化工技术与开发》
CAS
2017年第6期31-33,共3页
Technology & Development of Chemical Industry
基金
国家自然科学基金(51305348)
关键词
蠕变疲劳
高温氧化
损伤机理
creep fatigue
high temperature oxidation
damage mechanism
作者简介
宋冬行（1992-）,男,陕西人,西安石油大学硕士研究生
