LIU Zhiguo;CHEN Yong;CAO Yanni;ZHU Zhengsheng Nanjing University Shanxi Iron and Steel Institute; Xi'an professor;Department of Physics;Nanjing University;Nanjing 210008
Cite this article:
LIU Zhiguo;CHEN Yong;CAO Yanni;ZHU Zhengsheng Nanjing University Shanxi Iron and Steel Institute; Xi'an professor;Department of Physics;Nanjing University;Nanjing 210008. PRECIPITATION HARDENING OF ELINVAR ALLOY. Acta Metall Sin, 1990, 26(4): 40-44.
Abstract The microstructural evolution and precipitation hardening of an Elin-var alloy doped with Ti and Al during isothermal aging at 700℃ have been inves-tigated by atom probe field ion microscopy and microhardness measurement. Theγ′ precipitates formed are spherical and coherent with the matrix. The chemical com-position of the precipitates are (Ni_(0.53)Fe_(0.47))_3(Ti_(0.6)Al_(0.4)). During aging, a Lifshitz-Wanger type dissolution and coarsening reaction of the precipitates has been obse-rved. The hardness of the material varies with the aging time and reaches maxi-mum when the average diameter of the precipitates was about 11 nm.
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