Acta Metall Sin  1994, Vol. 30 Issue (11): 521-524    DOI:

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EFFECT OF MULTI-MICROALLOYING OF Mg AND RE ON MECHANICAL PROPERTIES OF Ni_3Al(B)-Cr BASE ALLOY AT ELEVATED TEMPERATURES

XU Songbo;CHEN Junming (Shanghai Institute of Metallurgy; Chinese Academy of Scicnces)(Manuscript received 18 January; 1994; in revised form 4 July; 1994)

XU Songbo;CHEN Junming (Shanghai Institute of Metallurgy; Chinese Academy of Scicnces)(Manuscript received 18 January; 1994; in revised form 4 July; 1994). EFFECT OF MULTI-MICROALLOYING OF Mg AND RE ON MECHANICAL PROPERTIES OF Ni_3Al(B)-Cr BASE ALLOY AT ELEVATED TEMPERATURES. Acta Metall Sin, 1994, 30(11): 521-524.

Abstract References Related Articles Recommended Metrics Download:  PDF(328KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Study was made of the mechanical properties at elevated temperatures of the Ni_3Al(B)-Cr base alloy multi-microalloyed by Mg and RE (alloy Ⅱ) or with additive of Zr (alloy Ⅰ). The temperature dependence on strength of the alloy Ⅱ, i.e., microalloyed by Mg and RE, keeps in abnormality. The temperature dependence on elongation of both alloys reveals into 3 regions:to drop slightly, sharply and then stably, which may be controlled by the mechanisms of dislocation barrier, oxygen diffusion and stable oxygen content respectively. The reason why the elongation of alloy Ⅱ falls into shaop drop region at lower temperature than that of alloy Ⅰ,may be that the oxygen diffusion is promoted by segregation of Mg and RE at grain boundaries. Correspondent:CHEN Junming, professor, Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050 Key words:  microalloying      Ni_3Al(B)-Cr base alloy      Ni_3Al(B)-Cr-Mg-RE      mechanical properties      Received:  18 November 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/I11/521 1徐颂波,陈俊明．金属学报,1994,30:A,2212 PopeDP,EzzSS．IntMetallRev,1984,29:136-1673李辉,郭建亭,孙超,谭明晖,赖万慧,王淑荷．材料科学进展,1992;6:285-2894郭建亭,李辉,孙超,朱耀宵．金属学报,1989;25:A406-A415TienJK,Eng S,SanchenJ．In:StoloffNS,KochCC,LiuCT,IzumiOeds．,HighTemperatureOrderIntermetallicalloyⅡ,MaterResSocSympProc1987;81:183-1936 StoloffNS．IntMetallRev,1989;34:153-1847 HippsleyCA,StrangwoodM,DevanJH．ActaMetallMater,1990;38:2393-24108LjuCT,SikkaVK．J Met,1986;38:19-219 BirksN,MeierGH．IntroductiontoHighTemperatureOxidationofMetals．London:EdwardArnoldLtd．1983 [1] CHEN Jilin, FENG Guanghong, MA Honglei, YANG Dong, LIU Wei. 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