Acta Metall Sin  1998, Vol. 34 Issue (7): 725-730    DOI:

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THE SECOND PHASE STRENGTHENING AND TOUGHENING EFFECT IN HIGH HARDNESS STEEL WELDS

REN Dengyi; DONG Jian; ZHANG Yuanbin(Colledge of Materials Science and Engineering; Shandong University of Technology; Jinan 250061)

REN Dengyi; DONG Jian; ZHANG Yuanbin(Colledge of Materials Science and Engineering; Shandong University of Technology; Jinan 250061). THE SECOND PHASE STRENGTHENING AND TOUGHENING EFFECT IN HIGH HARDNESS STEEL WELDS. Acta Metall Sin, 1998, 34(7): 725-730.

Abstract References Related Articles Recommended Metrics Download:  PDF(2053KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The feature of carbide and microstructure of matrix and their effect on toughness are studied in high carbon welds where Nb, Ti, V, Zr, RE coedest. Test results indicated that the synthetic effect of the multiple strong carbide elements and RE element leads to precipitate fine carbides before solidification of welds. The main mechanism of precipitating carbides from liquid phase is multiple direction precipitating at the same core. The contents of strong carbide elements and carbon element accorded with the fixed-ratio theorem, that made the matrix " carbon poor", and formed low carbon martensite. A weld with high hardness and good thoughness was achieved. Key words:  carbide      high carbon alloy-steel weld      toughness      hardfacing welding      Received:  18 July 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I7/725 1 周振丰.焊接冶金学(金属焊接性).北京:机械工业出版社,1995:170,171 (Zhou Zhenfeng.Welding Metallurgy( The Weldability of Metal). Beijing: The Publishing House of Mechanical Industry, 1995: 170, 171) 2 Doyen P S, Skrabec Q R. Weld J, 1981; 9: 25 3 Murphy Jim. Welded Fabr, 1987; 5: 18 4 张小诚,张卫平焊接学报,1994;15:177(Zhang Xiaocheng, Zhang Weiping Trans Chin Weld Inst, 1994; 15: 177) 5 张文钺.焊接冶金学(基本原理).北京:机械工业出版社,1995:69(Zhang Wenyue. 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