15CrMo耐热钢Larson-Miller参数值的确定与应用  

Determination of larson-miller parameter for 15CrMo heat resistant steel and its application

作　　者：杨瑞成[1] 傅公维[1] 王凯旋[1] 王晖[1] 

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2004年第3期27-30,共4页Journal of Lanzhou University of Technology

基　　金：甘肃省自然科学基金(ZS001 A22 046 C)

摘　　要：通过对已有文献资料的综合与分析处理,确定了珠光体型耐热钢15CrMo的Larson Miller(P)参数中的C值,并用以描述15CrMo的高温行为和性能,包括合金元素的贫化、蠕变强度和持久强度以及硬度的变化.并且进而用于15CrMo锅炉管道的寿命分析和剩余寿命的预测.Through analysis and statistical processing of the informations published in literatures available, the C-value within Larson-Miller parameter(P=T(C+lg t)) for pearlitic heat resistant steel 15CrMo is determined,C=20.30,which can be used to describe the high temperature behaviors and properties of 15CrMo steel,including element dilution of the alloy and variation of creep strength,endurance strength and Brinell hardness. Further,a method of life analysis and residual life prediction for 15CrMo boiler pipe is developed.

关 键 词：耐热钢 Larson-Miller参数 15CrMo 老化 寿命预测 残余寿命 

分 类 号：TG142.21[一般工业技术—材料科学与工程]