Heterostructured titanium composites with superior strength-ductility synergy via controllable bimodal grains and dislocation activity
Original Reports|更新时间:2026-08-19
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Heterostructured titanium composites with superior strength-ductility synergy via controllable bimodal grains and dislocation activity
Materials Research LettersVol. 11, Issue 10, Pages: 863-871(2023)
作者机构:
1. a State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University
2. b Shanghai Key Laboratory of Advanced High Temperature Materials and Precision Forming
3. a State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai People’s Republic of China
4. c AVIC Shenyang Aircraft Design & Research Institute
5. d Tech Institute for Advanced Materials College of Materials Science and Technology Nanjing Tech University
6. e Shanghai Engineering Research Center of 3D Printing Materials Shanghai Research Institute of Materials
Jiajing Chen, Yuanfei Han, Zichao Wei, et al. Heterostructured titanium composites with superior strength-ductility synergy via controllable bimodal grains and dislocation activity[J]. Materials Research Letters, 2023, 11(10): 863-871. DOI: 10.1080/21663831.2023.2252858.
DOI:
Jiajing Chen, Yuanfei Han, Zichao Wei, et al. Heterostructured titanium composites with superior strength-ductility synergy via controllable bimodal grains and dislocation activity[J]. Materials Research Letters, 2023, 11(10): 863-871. DOI: 10.1080/21663831.2023.2252858.DOI:
Heterostructured titanium composites with superior strength-ductility synergy via controllable bimodal grains and dislocation activity
Constructing heterostructures in particulate reinforced titanium matrix composites (PRTMCs) to evade the strength-ductility trade-off dilemma is much more difficult than in metals. Here
we proposed a novel and controllable strategy of simple powder assembly to fabricate bimodal-grained PRTMCs
this customized strategy makes coarse grains (CGs) surrounded by ultrafine-grained (UFG) matrices
conferring a superior strength-ductility combination not achievable by their traditional homogeneous counterparts. We found that such heterostructures appear to promote storage of mostlyc+a dislocations in CGs and accumulation near the CG/UFG boundaries. Moreover
hybrid reinforcements also activate multiple hardening mechanisms