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| INFLUENCE OF HIP ON MECHANICAL PROPERTIES OF THREE Ni-BASE SUPERALLOYS |
| HUANG Yunfang; TANG Yiajun; LI Yingao; GUO Jianting (Institute of Metal Research; Academia Sinica; Shenyang) (Manuscript received 6 August; 1983) |
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Cite this article:
HUANG Yunfang; TANG Yiajun; LI Yingao; GUO Jianting (Institute of Metal Research; Academia Sinica; Shenyang) (Manuscript received 6 August; 1983). INFLUENCE OF HIP ON MECHANICAL PROPERTIES OF THREE Ni-BASE SUPERALLOYS. Acta Metall Sin, 1984, 20(5): 414-421.
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Abstract The influence of HIP (hot isopressing) on the rupture, tensile and LCF properties of three wrought Ni-base superalloys has been investigated. The mieroporosity of these alloys may be substantially eliminated by the HIP technique: 100—120 MPa for 3h at 1150℃. After HIP, these superalloys of dense and homogeneous structure were produced as compared with conventionally casting process. Their rupture properties under different temperatures and stresses, tensile properties under different temperatures and LCF lives under different stresses may be remarkably improved for the notched and/or unnotehed specimens, as well the scattering bands of rupture and tensile properties may be evidently narrowed down.
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Received: 18 May 1984
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1 Wlodek, S. t. , Trans. ASM, 57 (1964) , 110．
2 Waisialewski, G. E. ; Lindblad, N. R. , Proc. on the 2nd Int. Conf. on Superalloys-Processing, Seven Spring Da, 1972．
3 Freeman, W. R. , Met. Progr. , 112 (1977) , 33．
4 Guo Jianting (郭建亭); Ranucci, D. , Int. J. Fatigue, 5 (1983) . 95． |
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