谢锐,吕铮,王晴,刘春明

• 1:沈阳建筑大学材料科学与工程学院
• 2:东北大学材料科学与工程学院材料各向异性与织构教育部重点实验室

摘要(Abstract)：

以雾化合金粉为原料采用热等静压成型制备了9Cr-ODS合金钢。首先，使用扫描电镜(SEM)和能谱仪(EDS)分析了雾化法制备的合金粉的表面形貌和化学成分。利用电子背散射衍射(EBSD)、透射电镜(TEM)、小角X射线散射(SAXS)等研究了9Cr-ODS合金钢的晶粒形貌及平均尺寸、析出相的形貌及分布密度。结果表明：随着热等静压温度的升高，9Cr-ODS合金钢样品的晶粒逐渐长大，抗拉强度逐渐降低；900℃成型制备的9Cr-ODS合金钢的平均晶粒尺寸为0.62μm,其强度高于其他两个成型温度制备的样品。9Cr-ODS合金钢中各类型析出相的分布密度随着成型温度的升高而降低，尺寸则呈现长大的趋势。测试温度越高样品的抗拉强度越低，700℃测量时3个样品的抗拉强度比较接近。测试温度的升高会使样品的伸长率升高，但900℃成型制备的样品的伸长率在700℃测量时出现下降的现象。

关键词(KeyWords)： 9Cr-ODS合金钢;微观组织;纳米尺寸析出相;小角X射线散射;力学性能

Abstract:

Keywords:

基金项目(Foundation): 辽宁省教育厅基本科研项目(青年项目)(LJKQZ2021061)

作者(Author): 谢锐,吕铮,王晴,刘春明

DOI: 10.13289/j.issn.1009-6264.2022-0114

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