钢的高温力学性能及其影响因素分析  

High temperature mechanical properties of steels and analysis on their factors

作　　者：张晨[1] 岳尔斌[1] 仇圣桃[1] 

机构地区：[1]先进钢铁流程及材料国家重点实验室钢铁研究总院连铸技术国家工程研究中心,北京100081

出　　处：《连铸》2008年第6期6-10,共5页Continuous Casting

摘　　要：概述了钢的高温力学性能,介绍了热履历、化学成分、应变速率、冷却速率、奥氏体晶粒度、析出物、动态再结晶等因素对钢的高温力学性能的影响,分析了各类影响因素之间的关系。结果表明,高温变形时晶界强度的降低和晶界滑移的发生是产生高温脆性的根本原因。The high temperature mechanical properties of steels have been described. The influence of thermal history, composition, strain rate, cooling rate, grian size, precipitation and dynamic recrystallisation on high temperature mechanical properties of steels have been introduced. The relationship between these factors have been analysed. Results showed that it was the essential reason of high-temperature brittleness that grain boundary strength decreased and grain boundary sliding occurred when deformation happened on high temperature.

关 键 词：高温脆性 热塑性 

分 类 号：TG142.1[一般工业技术—材料科学与工程]