A new α + β Ti-alloy with refined microstructures and enhanced mechanical properties in the as-cast state

Tianlong Zhang; Jiaming Zhu; Tao Yang; Junhua Luan; Haojie Kong; Weihong Liu; Boxuan Cao; Shiwei Wu; Dong Wang; Yunzhi Wang; Chain Tsuan Liu

doi:10.1016/j.scriptamat.2021.114260

A new α + β Ti-alloy with refined microstructures and enhanced mechanical properties in the as-cast state

Tianlong Zhang
, Jiaming Zhu
, Tao Yang
, Junhua Luan
, Haojie Kong
, Weihong Liu
, Boxuan Cao
, Shiwei Wu
, Dong Wang
, Yunzhi Wang
, Chain Tsuan Liu^*

^*Corresponding author for this work

City University of Hong Kong
Frontier Institute of Science and Technology
Harbin Institute of Technology (Shenzhen)
Ohio State University

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

A new (α + β) Ti-alloy, Ti-6Al-2V-1Cr-1Fe (wt%), with fine grain sizes, fine precipitates, together with the high strength and excellent ductility in its as-cast state is developed. As compared to the as-cast commercial Ti-6Al-4V alloy, the grain size and α lath thickness of the new alloy are substantially refined by 50∼75%, and the yield strength and ductility are increased by 19.7% and 51.8%, respectively. The grain size refinement is achieved by tuning the supercooling capacity of the alloy through alloying with the aid of CALPHAD calculations. In addition, the alloying of Cr and Fe substantially reduces the α lath thickness. This low-cost Ti alloy with the enhanced properties is anticipated to be highly suitable for various structural applications in its as-cast or as-printed state.

Original language	English
Article number	114260
Journal	Scripta Materialia
Volume	207
DOIs	https://doi.org/10.1016/j.scriptamat.2021.114260
State	Published - 15 Jan 2022
Externally published	Yes

Keywords

Alloy design
Grain refinement
Mechanical property
Thermodynamic calculation
Titanium alloys

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10.1016/j.scriptamat.2021.114260

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@article{d3906ccb7f324fd3947206d010914cf5,

title = "A new α + β Ti-alloy with refined microstructures and enhanced mechanical properties in the as-cast state",

abstract = "A new (α + β) Ti-alloy, Ti-6Al-2V-1Cr-1Fe (wt\%), with fine grain sizes, fine precipitates, together with the high strength and excellent ductility in its as-cast state is developed. As compared to the as-cast commercial Ti-6Al-4V alloy, the grain size and α lath thickness of the new alloy are substantially refined by 50∼75\%, and the yield strength and ductility are increased by 19.7\% and 51.8\%, respectively. The grain size refinement is achieved by tuning the supercooling capacity of the alloy through alloying with the aid of CALPHAD calculations. In addition, the alloying of Cr and Fe substantially reduces the α lath thickness. This low-cost Ti alloy with the enhanced properties is anticipated to be highly suitable for various structural applications in its as-cast or as-printed state.",

keywords = "Alloy design, Grain refinement, Mechanical property, Thermodynamic calculation, Titanium alloys",

author = "Tianlong Zhang and Jiaming Zhu and Tao Yang and Junhua Luan and Haojie Kong and Weihong Liu and Boxuan Cao and Shiwei Wu and Dong Wang and Yunzhi Wang and Liu, \{Chain Tsuan\}",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = jan,

day = "15",

doi = "10.1016/j.scriptamat.2021.114260",

language = "英语",

volume = "207",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

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TY - JOUR

T1 - A new α + β Ti-alloy with refined microstructures and enhanced mechanical properties in the as-cast state

AU - Zhang, Tianlong

AU - Zhu, Jiaming

AU - Yang, Tao

AU - Luan, Junhua

AU - Kong, Haojie

AU - Liu, Weihong

AU - Cao, Boxuan

AU - Wu, Shiwei

AU - Wang, Dong

AU - Wang, Yunzhi

AU - Liu, Chain Tsuan

PY - 2022/1/15

Y1 - 2022/1/15

N2 - A new (α + β) Ti-alloy, Ti-6Al-2V-1Cr-1Fe (wt%), with fine grain sizes, fine precipitates, together with the high strength and excellent ductility in its as-cast state is developed. As compared to the as-cast commercial Ti-6Al-4V alloy, the grain size and α lath thickness of the new alloy are substantially refined by 50∼75%, and the yield strength and ductility are increased by 19.7% and 51.8%, respectively. The grain size refinement is achieved by tuning the supercooling capacity of the alloy through alloying with the aid of CALPHAD calculations. In addition, the alloying of Cr and Fe substantially reduces the α lath thickness. This low-cost Ti alloy with the enhanced properties is anticipated to be highly suitable for various structural applications in its as-cast or as-printed state.

AB - A new (α + β) Ti-alloy, Ti-6Al-2V-1Cr-1Fe (wt%), with fine grain sizes, fine precipitates, together with the high strength and excellent ductility in its as-cast state is developed. As compared to the as-cast commercial Ti-6Al-4V alloy, the grain size and α lath thickness of the new alloy are substantially refined by 50∼75%, and the yield strength and ductility are increased by 19.7% and 51.8%, respectively. The grain size refinement is achieved by tuning the supercooling capacity of the alloy through alloying with the aid of CALPHAD calculations. In addition, the alloying of Cr and Fe substantially reduces the α lath thickness. This low-cost Ti alloy with the enhanced properties is anticipated to be highly suitable for various structural applications in its as-cast or as-printed state.

KW - Alloy design

KW - Grain refinement

KW - Mechanical property

KW - Thermodynamic calculation

KW - Titanium alloys

UR - https://www.scopus.com/pages/publications/85114817268

U2 - 10.1016/j.scriptamat.2021.114260

DO - 10.1016/j.scriptamat.2021.114260

M3 - 文章

AN - SCOPUS:85114817268

SN - 1359-6462

VL - 207

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 114260

ER -

A new α + β Ti-alloy with refined microstructures and enhanced mechanical properties in the as-cast state

Abstract

Keywords

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