|
|
|
| STRAIN AND FRACTURE OF LIQUID PHASE SINTERED ALLOY 90W-TNi-3Fe |
| by DU Jiaju (Institute of Metal Research; Academia Sinica; Shenyang); SHI Yuanlong (General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing) (Manuscript received 31 Janurary; 1982) |
|
Cite this article:
by DU Jiaju (Institute of Metal Research; Academia Sinica; Shenyang); SHI Yuanlong (General Research Institute of Non-Ferrous Metals; Ministry of Metallurgical Industry; Beijing) (Manuscript received 31 Janurary; 1982). STRAIN AND FRACTURE OF LIQUID PHASE SINTERED ALLOY 90W-TNi-3Fe. Acta Metall Sin, 1983, 19(4): 102-107.
|
|
|
Abstract The feature of deformation and fracture of a liquid phase sintered alloy 90W-7Ni-3Fe has been studied. It was found that the matrix of the alloy is the first to yield and to undergo plastic deformation. The cracks may be initiated along the W grain/matrix interfaces as the bonding force here is weak. While the bonding force is strengthened to a greater extent than the cleavage failure stress of W, the transgranular cleavage cracking of W grains and the plastic teaing of the matrix may happen simultaneously. Hydrogen is shown as one of the main sources of the inteffacial embrittlement of as-sintered specimen. The removal of the hydrogen both stored in the voids and dissolved in metals of the W grain/matrix interfaces is easily done by heat treatment under vacuum. Thereafter, the bonding force at interface as well as the tensile strength and plasticity of specimen can be modified.
|
|
Received: 18 April 1983
|
1 Green, E. C.; Jones, D. J.; Pitkin, W. R., Iron Steel Inst., London, Spec. Rap., (1954) , № 58, 253．
2 Margarir, T.; Allibert, C.; Driole, J., J. Less-Common Met. 53 (1977) , 85．
3 Krock, R. H.; Shepard, L. A., Metalle fuer die Raumfahrt, 5． Plansee Seminar De Re Metellica, Ed. Benesovsky, F., Metallwerk Planse A G., Reutte/Tirol, Spring-Verlag, Wien, 1965, p. 257．
4 Eash, D. T.; Zukas, E. G.; Green, W. V., AEC LA-4981-MS, 1972, p.1．
5 Edmonds, D. V.; Jones. P. N., Metall. Trans., 10A (1979) , 289．
6 冶金工业部有色金属研究总院,未发表资料,1979．
7 冯端;王业宁;丘第荣,金属物理,(下册),科学出版社,1976,p,663．
8 朱桂森;刘铭成;林忠杰;俞淑延,金属学报,17(1981) ,39．
9 Wert, Ch. A., Topics in Applied Physics, Vol. 29, Hydrogen in Metals Ⅱ, Eds. Alefcld, G.; Voelkl, J., Springer-Verlag, Berlin, 1978, p. 305．
10 Powell, G. L.; Anal. Chem., 144 (1972) , 2357．
11 Smith, G. C., Hydrogen in Metals, Proc. of the Conf., 23-27 Sept. 1973, Eds. Bernstein, I. M.; Thompson, A. W., ASM, 1974, p. 487． |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
