| Interfaces and ductility-toughness in TiAl intermetallic compounds | |
| He, LL; Ye, HQ | |
| Corresponding Author | He, LL() |
| 1996 | |
| Source Publication | INTERGRANULAR AND INTERPHASE BOUNDARIES IN MATERIALS, PT 2
 |
| ISSN | 0255-5476 |
| Volume | 207-Pages:613-616 |
| Abstract | In TiAl inetrmetallics, the a(2)-gamma and gamma-gamma interfaces play an important role in improving the ductility and toughness. Under less plastic deformation (2-3%) one set of deformation twins formed in the gamma phase and the initial deformation began at the a(2)-gamma, gamma-gamma interfaces, while under larger plastic deformation (6-7%) second set of twins will be induced and cause interfaces twist. The gamma matrix may be strengthened as the lamellar becomes thinner. Careful measurement for lattice planar spacing shows that there is about 0.7% expansion in the thin gamma slice in comparison with the coarse gamma matrix. Some composite defect structures with two interface dislocations bridged by a stacking fault inside the gamma slice were also identified, which are hard to be moved and become the obstruction of twin or dislocation motion. As result gamma matrix strengthing may degrade toughness (Klc) of the alloys. |
| Keyword | interface deformation twin ductility toughness |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:A1996BF80K00046 |
| Publisher | TRANSTEC PUBLICATIONS LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/126669 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | He, LL |
| Affiliation | CHINESE ACAD SCI,MET RES INST,ATOM IMAGING SOLIDS LAB,SHENYANG 110015,PEOPLES R CHINA |
| Recommended Citation GB/T 7714 | He, LL,Ye, HQ. Interfaces and ductility-toughness in TiAl intermetallic compounds[J]. INTERGRANULAR AND INTERPHASE BOUNDARIES IN MATERIALS, PT 2,1996,207-:613-616. |
| APA | He, LL,&Ye, HQ.(1996).Interfaces and ductility-toughness in TiAl intermetallic compounds.INTERGRANULAR AND INTERPHASE BOUNDARIES IN MATERIALS, PT 2,207-,613-616. |
| MLA | He, LL,et al."Interfaces and ductility-toughness in TiAl intermetallic compounds".INTERGRANULAR AND INTERPHASE BOUNDARIES IN MATERIALS, PT 2 207-(1996):613-616. |
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