珠光体耐热钢Larson-Miller参数的确定与验证  

Determination and verification of Larson-Miller parameter for pearlitic heat resistant steel 12Cr1MoV

作　　者：杨瑞成[1] 王晖[1] 刘忠艳[1] 史亚春[1] 

机构地区：[1]甘肃工业大学材料科学与工程学院,甘肃兰州730050

出　　处：《甘肃工业大学学报》2002年第3期23-26,共4页Journal of Gansu University of Technology

基　　金：甘肃省自然科学基金 (ZS0 0 1 A2 2 0 46 C)

摘　　要：通过对已有文献资料的分析处理 ,对于珠光体型耐热钢 12Cr1MoV ,确定了能够综合描述耐热钢高温运行时温度 时间共同作用的Larson Miller参数 (P =T(C +lgt) )中的C值 ,并且设计了模拟实验对其进行了验证 .结果表明 :用本研究所确定的C值以及P参数 ,无论是对于系列高温时效实验的结果 ,还是对于文献中 12Cr1MoV的组织退化行为以及力学性能的分析 ,均显示出良好的准确性与实用性 .By means of analysis and statistical processing of the informations published in literatures available, the C value within Larson Miller parameter ( P=T(C +lg t )) for the steel 12Cr1MoV is determined, which can be used to describe combined action of temperature and time for heat resistant steel in high temperature survice and the simulation experiments are also designed and performed for its verification. It is concluded that, using the P parameter with the determined C value, not only the results of high temperature aging experiments but also the degradation analysis of both the microstructures and mechanical properties for 12Cr1MoV show a good accuracy and practicality.

关 键 词：耐热钢 珠光体 Larson-Miller参数 12CR1MOV 力学性能 高温时效 

分 类 号：TG142.73[一般工业技术—材料科学与工程] TG142.21[金属学及工艺—金属材料]