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3篇 您的检索式:作者名="Mohammad Hossein ENAYATI"
    题名 作者 年代 出处 被引量
1CoCuFeMnNi高熵合金瞬态液相连接的显微组织与力学性能评价显示文摘研究CoCuFeMnNi高熵合金(HEA)的瞬时液相(TLP)连接。TLP连接使用AWS BNi-2夹层,温度为1050℃,时间分别为20、60、180、和240 min。采用扫描电镜和能谱仪表征连接时间对接头显微组织的影响。显微组织结果证实,约240 min时发生完全等温凝固。而连接时间为20、60和180 min的样品其连接区形成非热凝固区,含有富铬硼化物和Mn3Si金属间化合物。所有样品接头的等温凝固区中均形成γ-Ni固溶体。为了研究TLP连接时间对接头力学性能的影响,测量接头的剪切强度和显微硬度。结果表明,接头显微硬度值较小,相邻区显微硬度值较大。连接时间为20 min的样品接头具有最低的剪切强度100 MPa,而连接时间为240 min的样品具有最大的剪切强度180 MPa。Mohammad Ali KARIMI Morteza SHAMANIAN Mohammad Hossein ENAYATI 2021Transactions of Nonferrous Metals Society of China2021,31,10:2
2Phase Stability in Mechanically Alloyed Mg–Ni System Studied by Experiments and Thermodynamic Calculations显示文摘在这研究, MgNi 合金的微结构进化在机械 alloying (麻省) 期间被调查。另外,一条热力学的途径被利用预言形成的最稳定的阶段 ? 在在麻省以后的 MgNi 合金。MgNi 合金的阶段作文和微结构性质被 X 光检查 diffractometry,高分辨率的领域排放扫描电子显微镜学和高分辨率的传播电子显微镜学估计。结果为 70 显示出镁和镍粉末混合的那球 milling ? h 收益 nanostructural Mg 2 有 ~ 的一种平均谷物尺寸的 Ni 化合物 20 ? nm。热力学的计算在 0.0 的作文范围揭示了那 ? Mg ? 在那里的 Mg ? Mg ? Mg ?=?0.66 ( Mg 2 Ni 金属间化合的阶段),为金属间化合的阶段的免费精力被发现比非结晶、稳固的答案更否定的吉布斯的变化分阶段执行显示那 Mg 2 Ni 金属间化合的化合物是最稳定的阶段,与试验性的观察一致。Mohammad Hossein Enayati Fathallah Karimzadeh Soheil Sabooni Majid Jafari 2015Acta Metallurgica Sinica(English Letters)2015,28,8:0
3Fabrication of Bulk (Fe,Cr)_3Al/Al_2O_3 Intermetallic Matrix Nanocomposite Through Mechanical Alloying and Sintering显示文摘In the present study,(Fe,Cr)_3Al/20 vol% Al_2O_3 nanocomposite was prepared through mechanochemical reactions during ball milling and successfully bulked using a combination of cold isostatic press and sintering at 1400 ℃ for 1 h. Two processing approaches were utilized to produce(Fe,Cr)_3Al/Al_2O_3 nanocomposite: The first was milling of Fe, Cr,Al and Fe_2O_3, while the second one was milling of Fe, Cr, Al and Cr_2O_3, both in stoichiometric condition, to synthesize(Fe,Cr)_3Al/20 vol% Al_2O_3. Structural changes of powder particles during mechanical alloying were studied by X-ray diffraction. The microstructure and the morphology of powder particles and bulk samples were also studied by scanning electron microscopy and transmission electron microscopy. Microstructural analysis showed that mechanochemical reactions took place during milling, and nanometric Al_2O_3 was uniformly distributed in the matrix. The results also showed that the second approach required a considerably higher milling time to produce(Fe,Cr)_3Al/Al_2O_3 nanocomposite, as compared to the first one. For this reason, bulk samples were produced from the synthesized nanocomposite in the first approach. The microstructure of the sintered samples consisted of a network structure of(Fe,Cr)_3Al and Al_2O_3 phases with superior mechanical properties.Sayyed Erfan Aghili Mohammad Hossein Enayati Fathallah Karimzadeh 2016Acta Metallurgica Sinica(English Letters)2016,29,10:0
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