Journal of Guangxi Normal University(Natural Science Edition) ›› 2016, Vol. 34 ›› Issue (3): 95-101.doi: 10.16088/j.issn.1001-6600.2016.03.013

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Effect of Annealing on Microstructure of a Ni-based Nano-grained Alloy

GUO Runjiang1, SUN Yanle1, SHAN Mokun1, FU Liming1,2, GUO Pingsheng3, SHAN Aidang1,2   

  1. 1.College of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    2. College of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    3. College of Physical and Technology, Guangxi Normal University, Guilin Guangxi 541004, China
  • Received:2016-02-23 Online:2016-09-30 Published:2018-09-17

Abstract: Nano-grained (NG) alloy was obtained through symmetric and asymmetric rolling at room temperature.The effects of annealing on microstructure and mechanical properties of nano-grained Ni-based alloy were investigated. It was found that, after severe cold rolling, the NG material with an average grain size about 50 nm and (2 2 0) preferential orientation was fabricated. In addition, after annealing at 700 ℃, the grain size was about 150 nm and it was still below 250 nm even after annealing at 800℃, which shows that the nano-grained material has high thermal stability and is attributed to precipitation of γ′ phase.

Key words: Ni-based alloy, severe rolling, nano-grain material, heat treatment

CLC Number: 

  • TG156.24
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