Effect of the initial grain size on grain refinement in Ti–2Al–2.5Zr alloy subjected to multi-impact process
作者： Wei Chen , Lin Xiao , Qiaoyan Sun , Jun Sun
DOI: 10.1016/J.MSEA.2012.06.019
关键词:
摘要: Abstract Effect of the initial grain size on plastic deformation behavior and refinement mechanism has been investigated in Ti–2Al–2.5Zr alloy subjected to multi-impact process. The results show that is dominated by dislocation slip fine-grained sample. In contrast, twinning becomes prevalent coarse-grained one, contributes means twin subdivision fragmentation. Dynamic recrystallization (DRX) takes place both samples. But, it delayed one due relative low fraction boundaries energy dissipation twinning. Nevertheless, final refined area does not an obviously difference between two samples at a large strain, i.e., 1.61. Moreover, inhomogeneous heterogeneity sample much stronger than one. It was ascribed superimposed effect subsequent A criterion for achieving optimum finally suggested.
sci-hub.se 参考文章(31)
Thomas H. Courtney, Mechanical Behavior of Materials ,(2009)
YB Wang, M Louie, Y Cao, XZ Liao, HJ Li, SP Ringer, YT Zhu, None, High-pressure torsion induced microstructural evolution in a hexagonal close-packed Zr alloy Scripta Materialia. ,vol. 62, pp. 214- 217 ,(2010) , 10.1016/J.SCRIPTAMAT.2009.10.034
R.D. Doherty, D.A. Hughes, F.J. Humphreys, J.J. Jonas, D.Juul Jensen, M.E. Kassner, W.E. King, T.R. McNelley, H.J. McQueen, A.D. Rollett, Current issues in recrystallization: a review Materials Science and Engineering: A. ,vol. 238, pp. 219- 274 ,(1997) , 10.1016/S0921-5093(97)00424-3
H.A. Padilla, C.D. Smith, J. Lambros, A.J. Beaudoin, I.M. Robertson, Effects of Deformation Twinning on Energy Dissipation in High Rate Deformed Zirconium Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 38, pp. 2916- 2927 ,(2007) , 10.1007/S11661-007-9365-5
Kazukuni Hase, Nobuhiro Tsuji, Effect of initial microstructure on ultrafine grain formation through warm deformation in medium-carbon steels Scripta Materialia. ,vol. 65, pp. 404- 407 ,(2011) , 10.1016/J.SCRIPTAMAT.2011.05.018
Tadanobu Inoue, Zenji Horita, Hidetoshi Somekawa, Kazuyuki Ogawa, Effect of initial grain sizes on hardness variation and strain distribution of pure aluminum severely deformed by compression tests Acta Materialia. ,vol. 56, pp. 6291- 6303 ,(2008) , 10.1016/J.ACTAMAT.2008.08.042
N. Stanford, U. Carlson, M.R. Barnett, Deformation Twinning and the Hall–Petch Relation in Commercial Purity Ti Metallurgical and Materials Transactions A. ,vol. 39, pp. 934- 944 ,(2008) , 10.1007/S11661-007-9442-9
Dmitry Orlov, Yoshikazu Todaka, Minoru Umemoto, Nobuhiro Tsuji, Formation of bimodal grain structures in high purity Al by reversal high pressure torsion Scripta Materialia. ,vol. 64, pp. 498- 501 ,(2011) , 10.1016/J.SCRIPTAMAT.2010.11.020
YS Li, NR Tao, Ke Lu, None, Microstructural evolution and nanostructure formation in copper during dynamic plastic deformation at cryogenic temperatures Acta Materialia. ,vol. 56, pp. 230- 241 ,(2008) , 10.1016/J.ACTAMAT.2007.09.020
J.H. Van Der Merwe, Theory of dislocation cell sizes in deformed metals Materials Science and Engineering. ,vol. 55, pp. 79- 83 ,(1982) , 10.1016/0025-5416(82)90086-6