化学法制备氧化物弥散强化钢中强化相(Y_2O_3)形成机理  

Mechanism of forming strengthening phase (Y_2O_3) in oxide dispersion strengthened steels produced by a chemical method

作　　者：胡本芙[1] 郭丽娜[1] 彭顺米[1] 贾成厂[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《北京科技大学学报》2011年第3期308-312,共5页Journal of University of Science and Technology Beijing

基　　金：国家重点基础研究发展计划资助项目(No.2007CB209800)

摘　　要：开发了一种新型的制备氧化物弥散强化(ODS)铁素体钢的方法,用该方法研制的12Cr--ODS钢具有优异的室温和高温拉伸强度、较低的韧脆转化温度、良好的抗蠕变性能和抗辐照肿胀性能.分析了预合金粉末中氧化物(Y2O3)经焙烧热分解、热等静压的界面反应和热变形析出过程和演化行为,并提出选用合理的工艺技术有利于氧化物强化相均匀化.A new production route for producing a new class of oxides dispersion strengthened （ODS） steels was investigated. The steel produced by the chemical socking method has high temperature strength, low ductile-to-brittle transition temperature, good creep properties and void swelling resistance. The formation process and behavior of oxides （ Y2 03 ） in the prealloyed powders were analyzed in the process of thermal decomposition, interracial reactions of hot isostatic pressing, and precipitation of deformation processing. A uniform distribution of oxide particles could be obtained by selecting reasonable parameters.

关 键 词：铁素体钢 抗辐射 三氧化二钇 氧化物弥散强化 机理 

分 类 号：TL341[核科学技术—核技术及应用]