Effect of Aging Treatment on the Microstructure and Properties of K4648 Superalloy

Conference paper

Abstract

As the superalloy K4648 is a high Cr content alloy, the different heat treatment process affects the precipitation of α-Cr and Cr carbides. In this paper, the heat treatment experiment of K4648 superalloy was carried out. The results showed that the morphology and quantity of α-Cr phase in the alloy were very sensitive to the heat treatment. With the increase of aging temperature, the tensile strength of the alloy at room temperature decreased gradually, and the elongation and contraction furnace gradually increased, and the room temperature impact toughness increased to a certain extent and remained unchanged.

Keywords

K4648 superalloy Aging treatment Mechanical property 

References

  1. 1.
    DONG Jianxin, ZHANG Maicang, ZENG Yanping. Thermodynamic calculation of the precipitation phases in a high-Cr GH648 alloy[J]. Rare Metal Materials and Engineering, 34(1) (2005) 51–55.Google Scholar
  2. 2.
    YAN Xiaofeng, MA Huiping, LIU Wansheng. Effect of aging treatment on microstructure and mechanical property of GH648 alloy[J]. Journal of Iron and Steel Research, 15(7) (2003) 123–126.Google Scholar
  3. 3.
    DONG Jianxin, XIE Xishan. α-Cr precipitation behavior and its effect on high Cr-containing superalloys[J]. ActaMetallurgica, Sinica, 41(11) (2005) 1159.Google Scholar
  4. 4.
    ZHENG Liang. Formation and transformation of α phase in Ta-containing low Cr and high W content cast Ni-base superalloys[J]. The Chinese Journal of Nonferrous Metals, 15(10) (2005) 1566–1571.Google Scholar
  5. 5.
    ZHENG Liang, GU Chenqing, ZHANG Guoqing. Effect of Ta addition on the microstructure of cast nickel base superalloys containing low level of Cr and high level of W[J]. Rare Metal Materials and Engineering, 34(2) (2005) 194–198.Google Scholar
  6. 6.
    ZHENG Liang, XIAO Chengbo, TANG Dingzhong, GU Guohong, TANG Xin. Investigation of the solidification behavior of a high Cr content cast Ni-base superalloy K4648[J]. Rare Metal Materials and Engineering, 37(9) (2008) 1539–1544.Google Scholar
  7. 7.
    JU Quan, MA Huiping, ZHOU Yiqun, WANG Shipu. Hot plastic deformation of GH4648 superalloy[C]//High Temperature Materials Branch of Chinese Metals Society. Proceeding of the 11th Chinese Symposium on Superalloys. Beijing: Metallurgical Industry Press, 2007, pp 200–204.Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Beijing Beiye Functional Materials CorporationBeijingChina
  2. 2.University of Science and Technology BeijingBeijingChina

Personalised recommendations