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Ni_Al Precipitation Behavior in the Two-Phase (NiAI+Ni_3AL)Alloy

机译：两相（NiAI + Ni_3AL）合金中的Ni_Al析出行为

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摘要

The toughness of brittle intermetallics has been improved by controlling the morphologies of the Ni_3Althrough the solution and aging treatment in (NiAl+Ni_3Al)two-phase alloy.In thisstudy, changes in the Ni_3Al morphologies were attempted through variation of the heat treatment conditions. The micro-structure was examined using optical and scanning electron microscopy and the phase was characterized by X-ray diffraction analysis. Ourresults indicated that the precipitation of the homogeneous and randomly-oriented Ni_3AL during the final aging treatment couldbe made possible by performing an isothermal trans-formation of NiAl-(B2)to Ni+5Al_3 single phase prior to the fina laging treatment in Ni-34atAL Alloy.
机译：通过在（NiAl + Ni_3Al）两相合金中进行固溶和时效处理来控制Ni_3Al的形貌，从而改善了脆性金属间化合物的韧性。通过改变热处理条件，试图改变Ni_3Al的形貌。使用光学和扫描电子显微镜检查微观结构，并通过X射线衍射分析表征相。我们的结果表明，通过在Ni-34atAL中进行细微晶胞熟化处理之前，将NiAl-（B2）等温转变为Ni + 5Al_3单相，可以使最终时效处理中均匀且随机取向的Ni_3AL析出成为可能。合金。

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