应力与温度对P92钢中Laves相析出行为的影响  

INFLUENCE OF STRESS AND TEMPERATURE UPON PRECIPITATION BEHAVIOR OF LAVES-PHASE IN P92 STEEL

作　　者：林琳[1] 周荣灿[1] 郭岩[1] 侯淑芳[1] 范长信[1] 贾建民[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2012年第5期56-60,共5页Thermal Power Generation

摘　　要：通过扫描电镜测量P92钢蠕变断裂试样中标距内远离断口的蠕变稳定区和夹持端Laves相的颗粒尺寸、面积分数及颗粒密度等参数,研究应力与温度对Laves相析出行为的影响。结果表明:在所研究的范围内,应力促进了Laves相的生长过程,温度抑制Laves相的形核,且温度的影响较为显著,650℃下Laves相的颗粒尺寸明显大于600℃。By using scanning electron microscope, the parameters in creep stabilized zone and holding end at standard distance and far from the fractures on creep ruptured samples of P92 steel,such as the particle size of Laves -phase, the fraction of areas, and the density of particles etc. have been measured. The precipitation results of Laves- phase under different temperatures in the creep process show that the precipitation process of Laves - phase is afected by the creep stress and temperature, the growth process of Laves- phase is promoted by the stress,whereas the nucleation of Laves- phase being sup- pressed by the temperature.

关 键 词：P92钢 LAVES相 析出 应力 温度 

分 类 号：TG144[一般工业技术—材料科学与工程]