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首页> 外文期刊>Journal of Materials Science >NICKEL ALUMINIDE (NI3AL) FABRICATED BY REACTIVE INFILTRATION
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NICKEL ALUMINIDE (NI3AL) FABRICATED BY REACTIVE INFILTRATION

机译:反应浸渗法制得的镍铝(NI3AL)

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摘要

Nickel aluminide Ni3Al in the single phase form, with grain size similar to 10 mu m, porosity similar to 5%, tensile strength 425 MPa, modulus 92 GPa and ductility 9.5% at room temperature, was fabricated by reactive infiltration at 800 degrees C of liquid aluminium into a porous preform containing 78 vol% nickel and made by sintering 3-7 mu m size nickel particles. Without sintering, the preform contained 58 vol% nickel and reactive infiltration resulted in an aluminium-matrix NiAl3 particle (similar to 50 mu m size) composite and extensive growth of Ni-Al needles from the preform to the excess liquid aluminium around the preform. [References: 8]
机译:在800℃的温度下通过反应渗透制备了单相形式的铝镍镍合金Ni3Al,晶粒尺寸近似于10μm,孔隙率近似于5%,抗拉强度425 MPa,模量为92 GPa,延展性为9.5%。将液态铝制成包含78%(体积)镍的多孔预成型坯,并通过烧结3-7微米大小的镍颗粒制成。未经烧结,预成型坯含有58%(体积)的镍,反应性渗透导致铝基NiAl3颗粒(类似于50微米大小)复合材料,并且Ni-Al针从预成型坯大量生长到预成型坯周围的多余液态铝。 [参考:8]

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