High Ductility in a fully martensitic microstructure: a paradox in a Ti alloy produced by selective laser melting

A. Zafari; K. Xia

doi:10.1080/21663831.2018.1525773

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High Ductility in a fully martensitic microstructure: a paradox in a Ti alloy produced by selective laser melting

Original Report | 更新时间：2026-08-19

- High Ductility in a fully martensitic microstructure: a paradox in a Ti alloy produced by selective laser melting
- Materials Research Letters Vol. 6, Issue 11, Pages: 627-633(2018)
- 作者机构：
  
  Department of Mechanical Engineering The University of Melbourne
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1525773
  CLC：
- Online First：23 September 2018，
  
  Published：2018
- 稿件说明：
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A. Zafari, K. Xia. High Ductility in a fully martensitic microstructure: a paradox in a Ti alloy produced by selective laser melting[J]. Materials Research Letters, 2018, 6(11): 627-633.
DOI：

A. Zafari, K. Xia. High Ductility in a fully martensitic microstructure: a paradox in a Ti alloy produced by selective laser melting[J]. Materials Research Letters, 2018, 6(11): 627-633. DOI： 10.1080/21663831.2018.1525773.

摘要

Abstract

BSTRACTA fully martensitic Ti alloy consisting entirely of hexagonal-close-packed

′ was produced by selective laser melting (SLM)

exhibiting an impressive combination of high strength and excellent ductility. A small quantity of body-centred-cubic

formed at some large primary

′ plates oriented at ∼45° to the tensile direction was found responsible for early fracture owing to

′/

strain incompatibility. Properly selected SLM parameters resulted in a

-free microstructure containing

′/

′ interfaces only

preventing premature fracture. Consequently

large plastic deformation was enabled

creating randomly oriented nano-

′ crystals. The investigation dispels the myth that

′ is inherently brittle.

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Related Institution

School of Materials Science and Engineering Beihang University

State Key Laboratory of Solidification Processing Northwestern Polytechnical University

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a National Engineering Research Center of Light Alloy Net Forming Shanghai Jiao Tong University Shanghai People’s Republic of China

b State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University

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