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="ChDivSummary" name="ChDivSummary">The Fe-rich intermetallic compounds in Al-17Si-2 Fe were modified via Al-Mn-Ti quasicrystal master alloy.The effect of master alloy content on the Fe-rich phase morphology was studied by scanning electron microscope(SEM) and thermodynamic calculation.Results show that the microstructure of the Al-Mn-Ti master alloy consists of binary quasicrystal matrix and ternary AlMnTi......
Investigation on the icosahedral quasicrystal phase in Mg70.8Zn28Nd1.2 alloy ZHOU Cuilan1,LIANG Wei1,HAN Fuyin1,XU Chunxiang1,YAN Jie1,ZHANG Jinshan1 (1.College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China) Abstract:Mg70.8Zn28Nd1.2 (mole fraction) alloy containing icosahedral quasicrystal phase (I-phase) was prepared under conventional metal......
by the addition of icosahedral quasicrystal-contained Mg-Zn-Y-Mn master alloy. The introduction of MgZnYMn I-phase into ZA54 alloy has great contribution to the refinement of matrix microstructures... are displayed in Table 1[9]. It was prepared by melting a mixture of high purity Mg (99.8%), Al (99.8%) and Al-4%Be, Al-10%Mn master alloy in a resistance furnace. After melting the above raw materials at 750......
Investigation on the icosahedral quasicrystal phase in Mg70.8Zn28Nd1.2 alloy张金山,严杰,韩富银,梁伟,许春香,周翠兰摘 要:Mg70.8Zn28Nd1.2 (mole fraction) alloy containing icosahedral quasicrystal phase (I-phase) was prepared under conventional metal casting conditions. The microstructure, phase constitution and phase structure of the alloy were investigated by means......
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The quasicrystal, a novel crystal structure with long-range orientational order and no translational symmetry, was first reported in the rapidly cooled Al-Mn alloy by SHECHTMAN et al[1]. It offers attractive... of Mg element on I-phase grain surface to pin its growth. Fortunately, the similar phenomenon of Al element rejection from Al-Pd-Mn icosahedral quasicrystal was recently reported to pin the I-phase......
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and Chemistry Laboratory,Mianyang 621907,China 2) China Academy of Engineering Physics,Mianyang 621900,China摘 要:Ti/Zr-based icosahedral quasicrystals... regeneration of a suction-cast Ti36Zr40Ni20Pd4 quasicrystal.It was found that only through hot vacuuming the quasicrystal could be refreshed from air-flow poisoning to absorb deuterium in two cycles.During......
:Conventional casting method was employed to prepare Mg–Zn–Y alloy only with a-Mg+I-phase; however, the grain size of quasicrystal is quite large in the ascast state.Therefore, isothermal treatment was applied to refine the quasicrystal phase.The result shows that after the Mg–Zn–Y alloy was isothermally treated at 500 °C for several hours, the coarse......
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