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AGING STRUCTURE ANALYSIS OF 18Ni(350) MARAGING STEEL |
by ZHU Jing; LI Rong; ZHANG Liping (Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing) |
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Cite this article:
by ZHU Jing; LI Rong; ZHANG Liping (Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing). AGING STRUCTURE ANALYSIS OF 18Ni(350) MARAGING STEEL. Acta Metall Sin, 1986, 22(4): 26-31.
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Abstract The aging structure and deformation structure of the 18Ni(350) maraging steel have been studied The dominant age strengthening phases are Ni_3Mo and Ni_3Ti, or Ni_3Ti and reverse austenite in the specimens after heat treating at 820℃ for 1 h, A.C.+480℃ for 3 h A.C., or at 820℃ for lh, A C+510℃ for 3 h, A.C. respectively A brittle zone is found in the specimen of under aging at 820℃, 1 h, A.C. +400—450℃, 3 h, A. C., This is, perhaps, resulted from an ordered or short range ordered martensite Imatrix The proper regime of aging at 510℃ for 3 h, A C. is available on the basis of structural analysis and property examination.
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Received: 18 April 1986
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1 蔡其巩;朱静;何崇智,物理学报,(1974) ,№ 3. 178. 2 蔡其巩;朱静;何崇智;申辉旺;罗力更;宋为顺;于维乐,金属学报,13(1977) ,289. 3 朱静;赵英纬;潘天喜;蔡其巩,钢铁,16(1981) .№8,41. 4 李荣;于维乐;朱静;翟中生,钢铁,17(1982) ,№1,51. 5 何崇智,孟庆恩,钢铁,15(1980) ,№1,27. 6 Rack; H.J.; Kalish, D., Metall. Trans., 2 (1971) , 3011. 7 Tuffnell, G.W.; Cairns, R.L., ASM Trans. Q., 61 (1968) , 798. 8 叶恒强;邹本三,金属学报,15(1979) ,69. 9 Thomas, G.; Cheng, I-Lin; Mihalisin, J.R., ASM Trans. Q., 62 (1969) , 852. 10 Thomas, M., Mem. Sci. Rev. Metall., 68 (1971) .^ |
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