中国航空学报（英文版）
中國航空學報（英文版）
중국항공학보（영문판）
CHINESE JOURNAL OF AERONAUTICS
2005年
2期
171-174
,共4页
钛硅合金%微合金化%钇%力学性能%微观组织
鈦硅閤金%微閤金化%釔%力學性能%微觀組織
태규합금%미합금화%을%역학성능%미관조직
Ti-Si alloy%micro-alloying%yttrium%mechanical property%microstructure
研究了稀土元素钇(Y)对Ti-Ti5Si3共晶合金的微合金化作用.微观组织分析表明,添加微量Y,可以改变原始钛硅合金的共晶团形态和组织形貌.适量Y的加入(原子比0.025%),不仅使共晶团中粗大的Ti5Si3相颗粒明显细化和钝化,而且合金的微观组织也更加均匀.合金的室温压缩塑性和强度也得到了有效提高.稀土元素Y对钛硅合金的作用,很可能是因为Y原子替代了Ti5Si3相中的部分Si原子,形成硅化物Ti5(Si,Y)3所致.
研究瞭稀土元素釔(Y)對Ti-Ti5Si3共晶閤金的微閤金化作用.微觀組織分析錶明,添加微量Y,可以改變原始鈦硅閤金的共晶糰形態和組織形貌.適量Y的加入(原子比0.025%),不僅使共晶糰中粗大的Ti5Si3相顆粒明顯細化和鈍化,而且閤金的微觀組織也更加均勻.閤金的室溫壓縮塑性和彊度也得到瞭有效提高.稀土元素Y對鈦硅閤金的作用,很可能是因為Y原子替代瞭Ti5Si3相中的部分Si原子,形成硅化物Ti5(Si,Y)3所緻.
연구료희토원소을(Y)대Ti-Ti5Si3공정합금적미합금화작용.미관조직분석표명,첨가미량Y,가이개변원시태규합금적공정단형태화조직형모.괄량Y적가입(원자비0.025%),불부사공정단중조대적Ti5Si3상과립명현세화화둔화,이차합금적미관조직야경가균균.합금적실온압축소성화강도야득도료유효제고.희토원소Y대태규합금적작용,흔가능시인위Y원자체대료Ti5Si3상중적부분Si원자,형성규화물Ti5(Si,Y)3소치.
The effects of rare earth (Y) on Ti-Ti5Si3 eutectic alloy are studied. The results of microstructure analysis show that the colonies and microstructures of the raw alloy are transformed evidently with the addition of Y. With proper addition of yttrium (0.025at%), the shape and size of the coarse Ti5Si3 phases of the colonies change to be fine and round meanwhile the microstructure of the alloy goes into uniformity. The compressive ductility and strength at room temperature are also improved. The effects of yttrium on the alloy are likely due to that Si atoms in Ti5Si3 phase are partially substituted for yttrium atoms which results in silicide Ti5(Si,Y)3 phases.
