Acta Metall Sin  1994, Vol. 30 Issue (7): 312-320    DOI:

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EFFECTS OF P, Zr AND B ON MICROSTRUCTURE AND SEGREGATION OF DIRECTIONALLY SOLIDIFIED IN738 SUPERALLOY

ZHU Hongqun; TANG Yajun; GUO Shouren; ZHANG Zhija; ZHU Yaoxiao; HU Zhuangqi; SHI Changxu (Institute of Metal Research; Chinese Academy of Sciences;Shenyang)(Manuscript received 23 June; 1993: in revised form 14 March; 1994)

ZHU Hongqun; TANG Yajun; GUO Shouren; ZHANG Zhija; ZHU Yaoxiao; HU Zhuangqi; SHI Changxu (Institute of Metal Research; Chinese Academy of Sciences;Shenyang)(Manuscript received 23 June; 1993: in revised form 14 March; 1994). EFFECTS OF P, Zr AND B ON MICROSTRUCTURE AND SEGREGATION OF DIRECTIONALLY SOLIDIFIED IN738 SUPERALLOY. Acta Metall Sin, 1994, 30(7): 312-320.

Abstract References Related Articles Recommended Metrics Download:  PDF(758KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Effects of P, Zr and B on the solidification behaviour of directionally solidified IN738 superalloy have been studied by the methods of directional solidification plus rapid quenching and at various solidification rates. With the increase of P content in the alloy, the breadth of solid-liquid biphase region and temperature interval may be obviously enlarged;the residual liquid phase in interdendritic region increased; the dendritic structure developed;the secondary dendritic arms become more numerous and thinner, and the interfacial area between solid and liquid extended. The solute segregation of the alloy is different between addition of only P and of P together with Zr to the alloy. With alloy containing P, Zr and B, the formation of (γ+γ') entectic and precipitation of (γ+boride) eutectic in its front may be promoted.Correspondent: HU Zhuangqi, professor, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015 Key words:  P      Zr      B      IN738 alloy      directional solidification      structure      segregation      Received:  18 July 1994      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/Y1994/V30/I7/312 1ZhuYaoxiao,ZhangShunnan,XuLeying,BiJing,HuZhuangqi,ShiChangxu．In:DuhlDN,MaurerG,AntolovichS,LundC,ReichmanSeds．,Superalloys1988,Proc5thInt．SymponSuperalloys,SevenSprings,PA,TMS,1988:7032ZhuYaoxiao,ZhangShunnan,ZhangTiaoxiang,ZhangJinghua,HuZhuangqi,XieXishan,ShiChangxu．In:AntolovichS,StusrudRW,MackayRA,AntonDL,KhanT,KissingerRD,KlarstromDLeds．,Superalloys1992,ProcSixthIntSymponSuperalloys,SevenSprings,PA,TMS,1992:1453郭守仁,范鹤鸣,卢德忠．金属学报,1988;24:A2064StroupJP,PuglieseLA．MetProgr,1968;93:965MaxwellDH．MaterSciSymp,Cincinnati,1975:3326HammersleyCA．Metallurgia,1978;45(2):1057EdwardsMR．In:GellM,TienJK,etal．eds．,Superalloys1984,ProcFourthIntSymponSuperalloys,SevenSprings,PA,ASM,1984:2958OuichonLetal．In:GellM,TienJK,etal．eds．,Superalloys1984,ProcFourthIntSymponSuperalloys,SevenSprings,PA,ASM,1984:235 [1] DU Jinhui, BI Zhongnan, QU Jinglong. 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