徐海健,沙孝春,孟劲松,李凡,王文仲,康超,吕铮

• 1:海洋装备用金属材料及其应用国家重点实验室
• 2:鞍钢股份有限公司
• 3:东北大学材料科学与工程学院

摘要(Abstract)：

采用机械合金化和热等静压方法,制备出名义成分为Fe-15Cr-2W-0.3Zr-0.3Y_2O_3(质量分数,%)的氧化物弥散强化铁素体钢(15Cr-ODS钢),采用电子背散射衍射技术(EBSD)和透射电镜(TEM)研究了其组织结构和性能。结果表明:15Cr-ODS钢不存在明显的各向异性;TEM分析表明15Cr-ODS钢中存在两种析出相,分别为高密度(尺寸在1～10 nm)三方结构Y_4Zr_3O_(12)纳米析出相和块状的Cr_2O_3析出相;随着退火温度增加,15Cr-ODS钢的抗拉强度降低,总伸长率增加;15Cr-ODS钢的室温和700℃拉抗拉强度分别为(1198±17)和(417±11) MPa、总伸长率分别为(3.7±0.1)%和(13.3±0.5)%;拉伸断口形貌观察结果表明,15Cr-ODS钢在室温主要呈现脆性断裂特征。

关键词(KeyWords)： ODS铁素体钢;机械合金化;Y_4Zr_3O_(12)析出相;力学性能

Abstract:

Keywords:

基金项目(Foundation): 中国博士后科学基金项目(2018M641699)

作者(Author): 徐海健,沙孝春,孟劲松,李凡,王文仲,康超,吕铮

DOI: 10.13289/j.issn.1009-6264.2018-0350

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