Achieving fully-equiaxed fine β-grains in titanium alloy produced by additive manufacturing

Aitang Xue; Xin Lin; Lilin Wang; Xufei Lu; Lukai Yuan; Hanlin Ding; Weidong Huang

doi:10.1080/21663831.2022.2115323

Achieving fully-equiaxed fine β-grains in titanium alloy produced by additive manufacturing

Aitang Xue, Xin Lin, Lilin Wang, Xufei Lu, Lukai Yuan, Hanlin Ding, Weidong Huang

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

25 引用（Scopus）

摘要

The achievement of fine equiaxed β grain with conventional intragranular (α-Ti+β-Ti) microstructure in additive manufacturing titanium alloy remains a big challenge. We conquer this challenge by synergistically controlling β-grains during both solidification and subsequent thermal-cycles of laser directed energy deposition (DED), and a solution + quenching heat-treatment. Both the strength and plasticity of heat-treated Ti6Al4V3Ni0.05B are superior to those reported new DED titanium alloy and comparable to that of DED Ti6Al4V, because of the fine-equiaxed β-grains with intragranular (α-Ti+β-Ti) microstructure. These findings provide new insight into the grain structure control and the composition design of AM titanium alloy. IMPACT STATEMENT: The synergetic control of β-grain during both solidification and subsequent thermal-cycling is essential for achieving fully-equiaxed fine β-grains in additively manufactured titanium alloys.

源语言	英语
页（从-至）	60-68
页数	9
期刊	Materials Research Letters
卷	11
期	1
DOI	https://doi.org/10.1080/21663831.2022.2115323
出版状态	已出版 - 2023

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abstract = "The achievement of fine equiaxed β grain with conventional intragranular (α-Ti+β-Ti) microstructure in additive manufacturing titanium alloy remains a big challenge. We conquer this challenge by synergistically controlling β-grains during both solidification and subsequent thermal-cycles of laser directed energy deposition (DED), and a solution + quenching heat-treatment. Both the strength and plasticity of heat-treated Ti6Al4V3Ni0.05B are superior to those reported new DED titanium alloy and comparable to that of DED Ti6Al4V, because of the fine-equiaxed β-grains with intragranular (α-Ti+β-Ti) microstructure. These findings provide new insight into the grain structure control and the composition design of AM titanium alloy. IMPACT STATEMENT: The synergetic control of β-grain during both solidification and subsequent thermal-cycling is essential for achieving fully-equiaxed fine β-grains in additively manufactured titanium alloys.",

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author = "Aitang Xue and Xin Lin and Lilin Wang and Xufei Lu and Lukai Yuan and Hanlin Ding and Weidong Huang",

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T1 - Achieving fully-equiaxed fine β-grains in titanium alloy produced by additive manufacturing

AU - Xue, Aitang

AU - Lin, Xin

AU - Wang, Lilin

AU - Lu, Xufei

AU - Yuan, Lukai

AU - Ding, Hanlin

AU - Huang, Weidong

PY - 2023

Y1 - 2023

N2 - The achievement of fine equiaxed β grain with conventional intragranular (α-Ti+β-Ti) microstructure in additive manufacturing titanium alloy remains a big challenge. We conquer this challenge by synergistically controlling β-grains during both solidification and subsequent thermal-cycles of laser directed energy deposition (DED), and a solution + quenching heat-treatment. Both the strength and plasticity of heat-treated Ti6Al4V3Ni0.05B are superior to those reported new DED titanium alloy and comparable to that of DED Ti6Al4V, because of the fine-equiaxed β-grains with intragranular (α-Ti+β-Ti) microstructure. These findings provide new insight into the grain structure control and the composition design of AM titanium alloy. IMPACT STATEMENT: The synergetic control of β-grain during both solidification and subsequent thermal-cycling is essential for achieving fully-equiaxed fine β-grains in additively manufactured titanium alloys.

AB - The achievement of fine equiaxed β grain with conventional intragranular (α-Ti+β-Ti) microstructure in additive manufacturing titanium alloy remains a big challenge. We conquer this challenge by synergistically controlling β-grains during both solidification and subsequent thermal-cycles of laser directed energy deposition (DED), and a solution + quenching heat-treatment. Both the strength and plasticity of heat-treated Ti6Al4V3Ni0.05B are superior to those reported new DED titanium alloy and comparable to that of DED Ti6Al4V, because of the fine-equiaxed β-grains with intragranular (α-Ti+β-Ti) microstructure. These findings provide new insight into the grain structure control and the composition design of AM titanium alloy. IMPACT STATEMENT: The synergetic control of β-grain during both solidification and subsequent thermal-cycling is essential for achieving fully-equiaxed fine β-grains in additively manufactured titanium alloys.

KW - Additive manufacturing

KW - fully-equiaxed β-grains

KW - grain refinement

KW - microstructure

KW - titanium alloy

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DO - 10.1080/21663831.2022.2115323

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Achieving fully-equiaxed fine β-grains in titanium alloy produced by additive manufacturing

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