Simultaneously enhanced strength and ductility of titanium via multimodal grain structure

被引：115
作者：
Yang, D. K.
Hodgson, P. D.
Wen, C. E. [1 ]
机构：
[1] Deakin Univ, Inst Technol Res & Innovat, Waurn Ponds, Vic 3217, Australia
来源：
SCRIPTA MATERIALIA | 2010年 / 63卷 / 09期
关键词：
High strength; Ductility; Ti; Multimodal structure; HIGH-TENSILE DUCTILITY; PURE TITANIUM; NANOSTRUCTURED MATERIALS; RATE SENSITIVITY; DEFORMATION; MICROSTRUCTURE; NANOCRYSTALLINE; METALS; MECHANISM; BEHAVIOR;
D O I：
10.1016/j.scriptamat.2010.07.010
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Commercial Ti with a multimodal grain structure was successfully produced using cryorolling, followed by low-temperature annealing. This multimodal grain structure Ti exhibited a combination of high yield strength (926 MPa), a uniform elongation of 11% and a failure elongation of 23%. The strength enhancement was mainly derived from the ultrafine equiaxed grains, while the improved ductility originated from the large fraction of high-angle grain boundaries and the multimodal grain structure. Crown Copyright (C) 2010 Published by Elsevier Ltd. on behalf of Acta Materialia Inc. All rights reserved.
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页码：941 / 944
页数：4
相关论文
共 24 条
[1]   Toward a quantitative understanding of mechanical behavior of nanocrystalline metals [J].
Dao, M. ;
Lu, L. ;
Asaro, R. J. ;
De Hosson, J. T. M. ;
Ma, E. .
ACTA MATERIALIA, 2007, 55 (12) :4041-4065
[2]   Enhanced tensile strength and high ductility in cryomilled commercially pure titanium [J].
Ertorer, Osman ;
Topping, Troy ;
Li, Ying ;
Moss, Wes ;
Lavernia, Enrique J. .
SCRIPTA MATERIALIA, 2009, 60 (07) :586-589
[3]   Nanostructured materials: Basic concepts and microstructure [J].
Gleiter, H .
ACTA MATERIALIA, 2000, 48 (01) :1-29
[4]   Emission of partial dislocations from triple junctions of grain boundaries in nanocrystalline materials [J].
Gutkin, M. Yu ;
Ovid'ko, I. A. ;
Skiba, N. V. .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 38 (21) :3921-3925
[5]   Deformation behavior and plastic instabilities of ultrafine-grained titanium [J].
Jia, D ;
Wang, YM ;
Ramesh, KT ;
Ma, E ;
Zhu, YT ;
Valiev, RZ .
APPLIED PHYSICS LETTERS, 2001, 79 (05) :611-613
[6]   Optimization of strength and ductility in nanocrystalline and ultrafine grained metals [J].
Koch, CC .
SCRIPTA MATERIALIA, 2003, 49 (07) :657-662
[7]   Nano-sized twins induce high rate sensitivity of flow stress in pure copper [J].
Lu, L ;
Schwaiger, R ;
Shan, ZW ;
Dao, M ;
Lu, K ;
Suresh, S .
ACTA MATERIALIA, 2005, 53 (07) :2169-2179
[8]   Strain hardening and large tensile elongation in ultrahigh-strength nano-twinned copper [J].
Ma, E ;
Wang, YM ;
Lu, QH ;
Sui, ML ;
Lu, L ;
Lu, K .
APPLIED PHYSICS LETTERS, 2004, 85 (21) :4932-4934
[9]   Strain hardening of titanium: role of deformation twinning [J].
Salem, AA ;
Kalidindi, SR ;
Doherty, RD .
ACTA MATERIALIA, 2003, 51 (14) :4225-4237
[10]   Advanced mechanical properties of pure titanium with ultrafine grained structure [J].
Sergueeva, AV ;
Stolyarov, VV ;
Valiev, RZ ;
Mukherjee, AK .
SCRIPTA MATERIALIA, 2001, 45 (07) :747-752
123