典型文献
Characterization of face-centered cubic structure and deformation mechanisms in high energy shot peening process of TC17
文献摘要：
The face-centered cubic structure(fcc)and its deformation behaviors,as well as the distinctive role of fcc-Ti in nanocrystallization in TC17 subjected to high energy shot peening(HESP),were investigated by using comprehensive high-resolution transmission electron microscopy(HRTEM).The results showed that there was a stress-induced fcc-Ti in TC17 with a lattice constant of 0.420-0.433 nm and the B-type orien-tation relationship between the hcp-Ti and the fcc-Ti as[2-1-10]hcp//[-110]fcc and(0001)hcp//(111)fcc,which was accomplished by the gliding of Shockley partial dislocations with Burgers vector of 1/3[01-10]on the basal plane.The deformation twinning dominated the subsequent deformation of fcc-Ti,producing two types of{111}<11-2>twins with different characteristics.Among them,the I-type twin with complete structure was generated by successive gliding of Shockley partial dislocations with the same Burgers vec-tor of 1/6[11-2].In contrast,the cooperative slip of three Shockley partials,whose sum of Burgers vectors was equal to zero,produced the Ⅱ-type twin with zero net macroscopic strain.And then,the emission of Shockley partial with the Burgers vector of 1/6[11-2]on every three(111)fcc planes resulted in the for-mation of a 9R structure.Due to the dissociation effect of lamellar fcc-Ti and the superior deformation ability of fcc structure,the occurrence of fcc-Ti effectively promoted surface nanocrystallization of TC17.
文献关键词：
中图分类号：
作者姓名：
C.Yang;M.Q.Li;Y.G.Liu
作者机构：
School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China
文献出处：
引用格式：
[1]C.Yang;M.Q.Li;Y.G.Liu-.Characterization of face-centered cubic structure and deformation mechanisms in high energy shot peening process of TC17)[J].材料科学技术（英文版）,2022(15):136-151
A类：
nanocrystallization,HESP,partials
B类：
Characterization,centered,cubic,structure,deformation,mechanisms,high,energy,shot,peening,process,TC17,fcc,its,behaviors,well,distinctive,role,Ti,subjected,were,investigated,by,using,comprehensive,resolution,transmission,electron,microscopy,HRTEM,results,showed,that,there,was,stress,induced,lattice,constant,orien,tation,relationship,between,hcp,which,accomplished,gliding,Shockley,dislocations,Burgers,basal,twinning,dominated,subsequent,producing,two,types,twins,different,characteristics,Among,them,complete,generated,successive,same,In,contrast,cooperative,slip,three,whose,sum,vectors,equal,zero,produced,net,macroscopic,strain,And,then,emission,every,planes,resulted,9R,Due,dissociation,lamellar,superior,ability,occurrence,effectively,promoted,surface
AB值：
0.470788
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