论文部分内容阅读
采用机械合金化方法制备添加0.3%Y2O3的CLAM钢混合粉末,利用热等静压技术固化成型,制备出致密度高达98.7%的ODS-CLAM钢.利用二次电子成像、电子探针、XRD技术研究球磨后CLAM钢合金粉末形貌、合金元素分布、晶格畸变,确定ODS-CLAM钢混合粉末的最佳球磨工艺为:球磨时间50 h,球料比10∶1,球磨介质直径6 mm的硬质钢球,球磨气氛Ar.依据此工艺制备出的ODS-CLAM钢的高温组织稳定性较好,在1200℃固溶60 min后,其晶粒尺寸并未明显长大,板条细小,且Y2O3颗粒仍稳定存在于基体中.
The CLAM steel with 0.3% Y2O3 was prepared by mechanical alloying method and the hot-isostatic pressing technique was used to fabricate the ODS-CLAM steel with the highest density of 98.7%. The secondary electron imaging, electron probe and XRD The ball milling CLAM steel alloy powder morphology, alloying element distribution, lattice distortion, to determine the best ODS-CLAM steel ball milling process: milling time 50 h, the ball material ratio of 10: 1, ball milling medium diameter 6 mm Hard ball, milling atmosphere Ar. ODS-CLAM steel prepared according to this process high temperature microstructure stability, at 1200 ℃ solution after 60 min, the grain size did not significantly grow, small lath, And Y2O3 particles are still stable in the matrix.