The amorphous/amorphous nanolaminates(A/ANLs)have aroused great attentions owing to their tunable structure and enhanced mechanical properties.However,the plastic deformation mechanism of A/ANLs have yet been clarified.Here,we systematically examined the mechanical properties and deformation behavior of series of NiNb/ZrCuNiAl A/ANLs via nanoindentaion test.It was found that both the amount and morphology of amorphous/amorphous interface(A/AIs)played crucial roles in the plastic deforma-tion of A/ANLs.Less and straighter A/AIs facilitated multiple shear banding deformation,of which the hardness increased with decreasing layer thickness,as the A/Als hindered the propagation of shear bands(SBs).Whilst,more and wavier A/AIs promoted homogeneous deformation,of which the hardness stayed at a much lower value and was relatively irrelevant with the layer thickness,for the promoted activa-tion of shear transformation zones by A/Als.Our results provide guidance for modifying the mechanical properties of amorphous alloys with interface engineering design.

Z.Q.Chen;M.C.Li;J.S.Cao;F.C.Li;S.W.Guo;B.A.Sun;H.B.Ke;W.H.Wang

Songshan Lake Materials Laboratory,Dongguan 523808,PR China;Institute of Physics,Chinese Academy of Sciences,Beijing 100190,PR China;Institute of Materials Engineering,Nanjing University,Nantong 226019,PR China;School of Physics Science and Technology,Xinjiang University,Urumqi,Xinjiang 830046,PR China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,PR China;State Key Laboratory for Mechanical Behavior of Material,Xi'an Jiaotong University,Xi'an 710049,PR China

材料科学技术（英文版）

[1]Z.Q.Chen;M.C.Li;J.S.Cao;F.C.Li;S.W.Guo;B.A.Sun;H.B.Ke;W.H.Wang-.Interface dominated deformation transition from inhomogeneous to apparent homogeneous mode in amorphous/amorphous nanolaminates)[J].材料科学技术（英文版）,2022(04):178-183

ANLs,NiNb,ZrCuNiAl,nanoindentaion,AIs,straighter,wavier

Interface,dominated,deformation,transition,from,inhomogeneous,apparent,mode,amorphous,nanolaminates,have,aroused,great,attentions,owing,their,tunable,structure,enhanced,mechanical,properties,However,plastic,mechanism,yet,been,clarified,Here,systematically,examined,behavior,series,via,test,It,was,found,that,both,amount,morphology,interface,played,crucial,roles,Less,facilitated,multiple,shear,banding,which,hardness,increased,decreasing,layer,thickness,Als,hindered,propagation,bands,SBs,Whilst,more,promoted,stayed,much,lower,value,relatively,irrelevant,activa,transformation,zones,by,Our,results,provide,guidance,modifying,alloys,engineering,design

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