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金属学报  1990, Vol. 26 Issue (4): 40-44    
  论文 本期目录 | 过刊浏览 |
Elinvar合金的沉淀硬化
刘治国;陈涌;曹燕妮;朱正生
教授;南京(210008);南京大学物理系;南京大学;南京大学;陕西钢铁研究所
PRECIPITATION HARDENING OF ELINVAR ALLOY
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
引用本文:

刘治国;陈涌;曹燕妮;朱正生. Elinvar合金的沉淀硬化[J]. 金属学报, 1990, 26(4): 40-44.
, , , . PRECIPITATION HARDENING OF ELINVAR ALLOY[J]. Acta Metall Sin, 1990, 26(4): 40-44.

全文: PDF(601 KB)  
摘要: 本文研究了掺Ti,Al的Elinvar合金在700℃时效过程中γ′相沉淀过程及材料显微硬度的变化。原子探针场离子显微镜的观察表明:γ′相沉淀均呈球形和基体共格,其化学成分为(Ni_(0.53),Fe_(0.47))_3(Ti_(0.6),Al_(0.4)),两相界面清晰,γ′相的粗化过程服从Lifshitz和Wagner理论。材料的硬度在沉淀物平均直径为11um时达到最大,这一现象可以从沉淀硬化的理论得到定性的解释。
关键词 Elinvar合金原子探针场离子显微镜γ'相沉淀物沉淀硬化原子探针选区分析    
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.
Key wordsElinvar alloy    atom probe field ion microscope    γ′phase precipitation    precipitation hardening    atom probe selected area analysis
收稿日期: 1990-04-18     
基金资助:国家自然科学基金
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