沈倩倩,黄依娜,吴玉程,罗来马

• 1:合肥工业大学电子科学与应用物理学院
• 2:先进功能材料与器件安徽省重点实验室
• 3:有色金属材料与加工国家地方联合工程研究中心
• 4:合肥工业大学材料科学与工程学院

摘要(Abstract)：

以高纯原始粉末为原料,采用机械合金化(MA)制备了合金粉末。利用扫描电镜(SEM)、X射线衍射仪(XRD)和激光粒度分析仪等研究了合金粉末的微观形貌和晶粒尺寸及平均粒径在不同Cr含量和不同机械合金化时间下的变化规律。选择机械合金化40 h和50 h的合金粉末在950℃进行放电等离子体烧结(SPS)制备合金样品,然后使用天平和维氏硬度计分别测量合金样品的致密度和维氏硬度。结果表明:随着球磨时间的增加,Fe-Cr合金粉末平均粒径先下降,后在40 h出现上升点,然后下降;Fe-Cr-Y_2O_3合金粉末平均粒径先下降后上升。合金粉的晶粒尺寸都随球磨时间增加而不断减小。合金样品致密度均达96%,硬度随Cr含量增加逐渐增大。

关键词(KeyWords)： ODS合金;粒径;晶粒尺寸;维氏硬度;致密度

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金项目(PA2020GDSK0089)

作者(Author): 沈倩倩,黄依娜,吴玉程,罗来马

DOI: 10.13289/j.issn.1009-6264.2020-0334

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