%0 Journal Article
%T CoFeNi系高熵合金机械合金化过程的研究<br>Research on the Mechanical Alloying Process of CoFeNi System High-Entropy Alloys
%A 赵雅芳
%A 孟祥然
%A 郭晓影
%A 申梓傲
%A 牛也
%J Metallurgical Engineering
%P 107-114
%@ 2373-1486
%D 2024
%I Hans Publishing
%R 10.12677/meng.2024.112013
%X 为了研究CoFeNi系高熵合金的机械合金化过程，采用300 r/min，40 h的机械球磨法(MA)+1000℃的热压等离子烧结工艺(SPS)制备了CoFeNi、CoFeNiAl<sub>0.5</sub>和CoFeNiAl<sub>0.5</sub>Cr<sub>0.5</sub>高熵合金粉体和块体。通过X衍射分析仪(XRD)、扫描电子显微镜(SEM)等测试手段，研究CoFeNi系合金物相和显微组织。球磨40 h后CoFeNi合金为FCC相，CoFeNiAl<sub>0.5</sub>和CoFeNiAl<sub>0.5</sub>Cr<sub>0.5</sub>为FCC + 少量BCC相。SPS烧结后，CoFeNi合金仍然为FCC相，而CoFeNiAl<sub>0.5</sub>和CoFeNiAl<sub>0.5</sub>Cr<sub>0.5</sub>合金中部分FCC相转变为BCC相，合金中BCC相含量高于粉体合金。<br />
In order to study the mechanical alloying process of CoFeNi system high entropy alloys, CoFeNi, CoFeNiAl<sub>0.5</sub> and CoFeNiAl<sub>0.5</sub>Cr<sub>0.5</sub> high entropy alloy powders and lumps were prepared by mechanical ball milling (MA) + hot press plasma sintering (SPS) process at 300 r/min for 40 h. The alloy powders and lumps were prepared by X diffraction analyzer (XRD) and scanning electron microscope (SEM). The physical phase and microstructure of CoFeNi alloys were investigated by X diffraction analyzer (XRD), scanning electron microscope (SEM) and other testing methods. The CoFeNi alloy was in FCC phase after ball milling for 40 h, and the CoFeNiAl<sub>0.</sub><sub>5</sub> and CoFeNiAl<sub>0.5</sub>Cr<sub>0.5</sub> were in FCC + few BCC phase. After SPS sintering, the CoFeNi alloy was still in FCC phase, and some of the FCC phases in CoFeNiAl<sub>0.5</sub> and CoFeNiAl<sub>0.5</sub>Cr<sub>0.5</sub> alloys were transformed into BCC phase. The content of BCC phase in the alloys is higher than that in the powder alloys.
%K 高熵合金，机械合金法，放电等离子烧结<br>High Entropy Alloys
%K Mechanical Alloying
%K Discharge Plasma Sintering
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=89988