工程与试验
工程與試驗
공정여시험
ENGINEERING & TEST
2014年
2期
51-55
,共5页
非晶材料%纳米晶%微压缩%复合材料%机械性能
非晶材料%納米晶%微壓縮%複閤材料%機械性能
비정재료%납미정%미압축%복합재료%궤계성능
amorphous material%nano-crystal%micro-compression%composite%mechanical proper-ty
本文用微压缩试验研究了钛基非晶/纳米晶复合材料的力学行为。结果表明，这种复合材料具有高韧性和高应变硬化特性。变形能力的提高归功于变形期间局部剪切流与剪切带的成核、增殖以及相互作用。微观观察表明，压缩载荷促进了纳米晶体在非晶基体上的沉淀，这种沉淀与非晶基体的裂纹扩展产生相互作用，显著提高了材料的塑性。
本文用微壓縮試驗研究瞭鈦基非晶/納米晶複閤材料的力學行為。結果錶明，這種複閤材料具有高韌性和高應變硬化特性。變形能力的提高歸功于變形期間跼部剪切流與剪切帶的成覈、增殖以及相互作用。微觀觀察錶明，壓縮載荷促進瞭納米晶體在非晶基體上的沉澱，這種沉澱與非晶基體的裂紋擴展產生相互作用，顯著提高瞭材料的塑性。
본문용미압축시험연구료태기비정/납미정복합재료적역학행위。결과표명，저충복합재료구유고인성화고응변경화특성。변형능력적제고귀공우변형기간국부전절류여전절대적성핵、증식이급상호작용。미관관찰표명，압축재하촉진료납미정체재비정기체상적침정，저충침정여비정기체적렬문확전산생상호작용，현저제고료재료적소성。
The mechanical properties of Ti based amorphous/Nano-crystal composite are studied by micro-compression test.The testing results show that the composite has the properties of high ductility and high strain hardening.The deformability improvement is attributed to the nuclea-tion,multiplication and interaction of localized shear flows and shear bands during deformation. Microscopic observations indicate that compressive loading facilitates nano-crystal precipitation in the amorphous matrix,which interact with crack propagation through the amorphous matrix,re-sulting in remarkable plasticity.
