Physical simulation of internal crack healing in a heavy-forged billet

MI Guo-fa; ZHANG Jun-qiang; XU Bin; SUN Ming-yue

doi:10.13374/j.issn2095-9389.2017.11.010

Volume 39 Issue 11

Nov. 2017

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MI Guo-fa, ZHANG Jun-qiang, XU Bin, SUN Ming-yue. Physical simulation of internal crack healing in a heavy-forged billet[J]. Chinese Journal of Engineering, 2017, 39(11): 1674-1683. doi: 10.13374/j.issn2095-9389.2017.11.010

Citation:

MI Guo-fa, ZHANG Jun-qiang, XU Bin, SUN Ming-yue. Physical simulation of internal crack healing in a heavy-forged billet[J]. Chinese Journal of Engineering, 2017, 39(11): 1674-1683. doi: 10.13374/j.issn2095-9389.2017.11.010

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Physical simulation of internal crack healing in a heavy-forged billet

doi: 10.13374/j.issn2095-9389.2017.11.010

MI Guo-fa¹,
ZHANG Jun-qiang^1,2,
XU Bin^{2,3
,
,},
SUN Ming-yue^2,3

1) School of Material Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
2) Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
3) Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Received Date: 2017-03-20

Abstract

Abstract

The healing behavior of internal cracks in an ingot during the forging process was investigated using laboratory and industrial simulation studies. During the laboratory experiment, specimens with artificial cracks were hot compressed by a Gleeble simulator, and the effect of temperature and deformation ratio on inner crack healing was studied. The experimental result shows that the higher the deformation temperature or greater the deformation, the better the healing effect. To verify the accuracy and applicability of the result in an actual forging process, an industrial experiment was designed and performed. The result shows that internal cracks can be effectively metallurgically bonded at a temperature of 1200℃ and deformation ratio of 40%.
- heavy forging,
- internal cracks,
- healing,
- deformation,
- deformation temperature

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References

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