球磨时间对热压烧结制备TiC-CoCrFeNi复合材料微观组织及力学性能的影响
Effect of milling time on microstructure and mechanical properties of TiC-CoCrFeNi composites prepared by hot pressing sintering
查看参考文献22篇
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文摘
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采用机械合金化-热压烧结法,制备TiC-CoCrFeNi复合材料,研究球磨时间对材料微观组织及力学性能的影响。结果表明:Co,Cr,Fe和Ni粉体在球磨10h后形成fcc结构的单相固溶体。经1200℃/1h热压烧结后,烧结体中生成TiC和Cr7C3结构的碳化物,并弥散分布于CoCrFeNi固溶体中。球磨时间显著改变了烧结体中碳化物的数量和尺寸,进而影响材料的力学性能。在球磨10h时,烧结体中纳米级TiC相急剧增多,此时复合材料的硬度(671HV)和屈服强度(1440MPa)达到最大值。 |
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其他语种文摘
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TiC-CoCrFeNi composite was fabricated by mechanical alloying and consequently vacuum hot pressing sintering,and the effects of milling time on the microstructure and mechanical properties of the composite was investigated.The results show that a single-phase solid solution with fcc structure is obtained after milled for 10h of Co,Cr,Fe and Ni powders.TiC and Cr7C3 structured carbides are formed and dispersed in the CoCrFeNi solid solution after hot pressing sintered at 1200℃ for 1h.Milling time has a significant effect on the size and amount of TiC and Cr7C3 structured carbides,which can affect the mechanical properties of the composite.When the milling time reaches 10h,the hardness and yield strength of the composite reach the maximum values of 671HV and 1440MPa,respectively,which is probably attributed to the dramatically increasing of nano-sized TiC in sintered bodies. |
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来源
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材料工程
,2019,47(6):94-100 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2018.000082
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关键词
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机械合金化
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球磨
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高熵合金
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复合材料
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地址
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郑州大学物理工程学院, 材料物理教育部重点实验室, 郑州, 450052
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4381 |
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学科
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金属学与金属工艺 |
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基金
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河南省高等学校重点科研项目
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文献收藏号
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CSCD:6523801
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