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材料工程  2011 

真空感应熔炼用石墨坩埚对Ni47Ti44Nb9形状记忆合金质量的影响

Keywords: Ni47Ti44Nb9,形状记忆合金,真空感应熔炼,石墨坩埚

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Abstract:

研究了三种不同种类的石墨坩埚进行真空感应熔炼Ni47Ti44Nb9形状记忆合金。一种是低密度的挤压石墨材料,另外两种是不同孔隙度和纯净度的等静压石墨材料,并且用纯Ni,Ti和Nb原材料进行Ni47Ti44Nb9形状记忆合金熔炼。采用低等级、低密度石墨坩埚进行熔炼,合金铸锭的碳含量会升高;选用高密度、高纯净度的石墨坩埚可以获得较好质量的合金铸锭。

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