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首页> 外文期刊>Materials transactions >Preparation of MoSi{sub}2-X(X=B,Al,Nb) alloys by mechanical alloying and pulse discharge sintering process
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Preparation of MoSi{sub}2-X(X=B,Al,Nb) alloys by mechanical alloying and pulse discharge sintering process

机译：机械合金化和脉冲放电烧结法制备MoSi {sub} 2-X（X = B，Al，Nb）合金

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摘要

Mechanical alloying and pulse discharge sintering (MA-PDS) process was employed to fabricate MoSi{sub}2 alloys with additions of Al, B or Nb alloy elements. Microstructure and mechanical properties of these alloys were investigated. An exothermic behavior was identified during milling. This process is related to the reaction of each element to synthesize intermetallic MoSi{sub}2. The MoSi{sub}2 alloys fabricated by MA-PDS process showed a very fine microstructure compared to that sintered from the commercial MoSi{sub}2 alloy powders. Significant hardness increase was found du to the refinement of the binary MoSi{sub}2 microstructure. Alloys made form powders milled in air show higher hardness compared to those in Ar gas. This was because of the oxides formed during milling process.
机译：机械合金化和脉冲放电烧结（MA-PDS）工艺用于制造添加有Al，B或Nb合金元素的MoSi {sub} 2合金。研究了这些合金的组织和力学性能。在铣削过程中发现放热行为。该过程与每种元素合成金属间MoSi {sub} 2的反应有关。与用市售MoSi {sub} 2合金粉末烧结相比，通过MA-PDS工艺制造的MoSi {sub} 2合金显示出非常精细的微观结构。发现在二元MoSi {sub} 2微观结构的细化过程中，硬度显着增加。与氩气相比，在空气中研磨制成的粉末合金具有更高的硬度。这是因为在研磨过程中形成了氧化物。

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