超超临界汽轮机用耐热钢热处理工艺的优化  

Optimization of Heat Treatment Process for Heat-resistant Steel of Ultra Supercritical Steam Turbine

作　　者：赵成志[1] 王艳华[1] 魏双胜[2] 朱晓光[1] 杨世伟[1] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001 [2]哈尔滨汽轮机厂有限责任公司,黑龙江哈尔滨150046

出　　处：《机械工程材料》2006年第10期88-90,共3页Materials For Mechanical Engineering

基　　金：国家863计划资助项目(2002AA526013)

摘　　要：采用正交试验方法研究了超超临界汽轮机用耐热钢ZG1Cr10MoWVNbN的热处理工艺,分析了正火温度、保温时间和回火温度三个主要因素对该钢组织和性能的影响规律,对其热处理工艺进行了优化。结果表明:在1100℃保温5 h后空冷正火处理,然后670℃保温5 h回火后随炉冷到300℃以下出炉空冷,其综合力学性能最佳。Orthogonal test method was used to optimize heat treatment process of the heat-resistant steel ZG1Cr10MoWVNbN for ultra supereritical steam turbine. The influences of three factors, i. e. normalizing temperature holding times and tempering temperature, on structures and properties of the heat-resistant steel were analyzed. The results show that optimum properties of the steel are obtained whieh normalized at 1 000 ℃ for 5 h, tempered at 670℃for 5 h and cooled in furnaee, then cooled in atmosphere from 300℃ to room temperature.

关 键 词：超超临界汽轮机 耐热钢 热处理 力学性能 

分 类 号：TG115.5[金属学及工艺—物理冶金]