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| 1 | Overcoming the strength-ductility trade-off by tailoring grain-boundary metastable Si-containing phase in β-type titanium alloy显示文摘It is well accepted that grain-boundary phases in metallic alloys greatly deteriorate the mechanical properties.In our work,we report on a novel strategy to prepare high strength-ductility β-type(Ti69.71 Nb23.72Zr4.83Ta1.74)97Si3(at.%)(TNZTS) alloys by tailoring grain-boundary metastable Si-containing phase.Specifically,the thin shell-shaped metastable S1 phase surrounding the columnar β-Ti grain was intercepted successfully via nonequilibrium rapid solidification achieved by selective laser melting(SLM).Subsequently,the thin shell-shaped metastable(Ti,Nb,Zr)5 Si3(called S1) phase was transformed into globular(Ti,Nb,Zr)2 Si(called S2) phase by the solution heat treatment.Interestingly,the globular S2 phases reinforced TNZTS alloy exhibits ultrahigh yield strength of 978 MPa,ultimate strength of 1010 MPa and large elongation of 10.4 %,overcoming the strength-ductility trade-off of TNZTS alloys by various methods.Especially,the reported yield strength herein is 55 % higher than that of conventionally forged TNZT alloys.Dynamic analysis indicates the globularization process of the metastable S1 phase is controlled by the model of termination migration.The quantitative analysis on strengthening mechanism demonstrates that the increase in yield strength of the heat-treated alloys is mainly ascribed to the strengthening of the precipitated silicide and the dislocations induced by high cooling rate.The obtained results provide some basis guidelines for designing and fabricating β-titanium alloys with excellent mechanical properties,and pave the way for biomedical application of TNZTS alloy by SLM. | X.Luo L.H.Liu C.Yang H.Z Lu H.W.Ma Z.Wang D.D.Li L.C.Zhang Y.Y.Li | 2021 | Journal of Materials Science & Technology2021，，9： | 5 |
| 2 | 查看详情显示文摘 | Yao C. S Yu C. X Tu S. J Shi D.Q Wang X.S Zhu Y.Q Yang H.Z | | 0，，： | 1 |
| 3 | Development of a new wear-resistant material:TiC/TiNi composite显示文摘 | Ye H.Z Liu R Li D.Y Eadie R | | 0，，10： | 1 |
| 4 | 浅析游戏教学法在英语课堂上的运用(Theapplicationofgame-basedlearninginEnglishclass)显示文摘 | LI H.Z | 2011 | 剑南文学(经典教苑)2011，11，： | 1 |
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| 6 | The effect of fiber density on strength capacity of bamboo显示文摘 | Tommy Y Lo H.Z Cui H.C Leung | 2004 | Materials Letters2004，，21： | 1 |
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| 14 | Effect of nutrients on growth and lipid accumulation in the green algae Dunaliella tertiolecta显示文摘 | Chen M Tang H.Y Ma H.Z | | 0，，02： | 1 |
| 15 | Comparison of Techniques for Estimating Herbage Intake of Grazing Dairy Cows显示文摘 | H.J. Smit H.Z Taweel B.M. Tas S. Tamminga A. Elgersma | 2005 | Journal of Dairy Science2005，，5： | 1 |
| 16 | Deoxidation of Ti-Al intermetallics via hydrogen treatment显示文摘 | Su Y.Q Liu X.W Luo L.S Zhao L Guo J.J and Fu H.Z | | 0，，17： | 1 |
| 17 | 查看详情显示文摘 | Li H.B Zhu Y.Q Song X.W Hu F.Z Liu B Li Y.H Niu Z.X Liu P Wang Z.H Song H.B Zou X.M Yang H.Z | | 0，，： | 1 |
| 18 | Microstructure selection during the directionally peritectic solidification of Ti-Al binary system显示文摘 | Su Y.Q Liu C Li X.Z Guo J.J Li B.S Jia J and Fu H.Z | | 0，，3： | 1 |
| 19 | Direct and indirect longitudinal effects of parental involvement on student achievement:Second-order latent growth modeling across ethnic groups显示文摘 | Hong S Ho H.Z | | 0，，01： | 1 |
| 20 | 查看详情显示文摘 | Hu K.Q Kou H.Z | | 0，，05： | 1 |
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