Designing ultrafine lamellar eutectic structure in bimodal titanium alloys by semi-solid sintering
文献类型：期刊论文
| 作者 | Kang LM; Yang C; Wang F ; Li XX; Zhu DZ; Zhang WW; Chen WP; Huan Y(郇勇)
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| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
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| 出版日期 | 2017-04-25 |
| 卷号 | 702页码:51-59 |
| 关键词 | Bimodal titanium alloys Eutectic Semi-solid Liquid phase sintering Spark plasma sintering |
| ISSN号 | 0925-8388 |
| 中文摘要 | We report on a novel approach to design typical ultrafine lamellar eutectic structure in bimodal alloys fabricated by semi-solid sintering (SSS) of a eutectic mixture. In our work ultrafine lamellar eutectic structure was implemented by controlling the phase composition of eutectic reaction and consequently by regulating the structure of eutectic reaction-induced liquid phase through varying component number. Microstructure analysis indicate that although all SSSed alloys have the same three phase constitutions of bcc beta-Ti(Fe Co) and fcc Ti-2(Co Fe) the morphology and distribution of the eutectic structure transforms from limited length and minor quantity to partial fine alternating bcc beta-Ti and bcc Ti(Fe Co) lamellae and further to typical complete ultrafine alternating continuous lamellae in the SSSed ternary Ti-Fe-Co quaternary Ti-Fe-Co-Nb and quinary Ti-Fe-Co-Nb-Al alloys. Interestingly the SSSed Ti-Fe-Co-Nb-Al alloy presents a novel bimodal microstructure of coarse fcc Ti-2(Co Fe) surrounded by an ultrafine lamellar eutectic matrix containing ultrafine bcc beta-Ti and bcc Ti(Fe Co) lamellae. This bimodal microstructure exhibits ultra-high yield strength of 2050 MPa with plasticity in compression of 19.7% which exceed published values of equivalent materials. Our results provide a novel pathway for fabricating new-structure metallic alloys for high-performance structural applications. (C) 2017 Elsevier B.V. All rights reserved. |
| 类目[WOS] | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | HIGH-STRENGTH ; ENHANCED DUCTILITY ; MECHANICAL-PROPERTIES ; DENDRITE COMPOSITE ; LARGE PLASTICITY ; AMORPHOUS PHASE ; BULK ALLOYS ; NB ALLOYS ; FE ; MICROSTRUCTURE |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000395842400007 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/60567]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Kang LM,Yang C,Wang F,et al. Designing ultrafine lamellar eutectic structure in bimodal titanium alloys by semi-solid sintering[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,702:51-59. |
| APA | Kang LM.,Yang C.,Wang F.,Li XX.,Zhu DZ.,...&Huan Y.(2017).Designing ultrafine lamellar eutectic structure in bimodal titanium alloys by semi-solid sintering.JOURNAL OF ALLOYS AND COMPOUNDS,702,51-59. |
| MLA | Kang LM,et al."Designing ultrafine lamellar eutectic structure in bimodal titanium alloys by semi-solid sintering".JOURNAL OF ALLOYS AND COMPOUNDS 702(2017):51-59. |
入库方式： OAI收割
来源：力学研究所
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