Improved mechanical properties of β metastable Ti alloys processed by laser powder bed fusion

被引：3

作者：

Duchaussoy, A. ^{[1
,2
]}

Marteleur, M. ^{[1
]}

Jacques, P. J. ^{[1
]}

Choisez, L. ^{[1
]}

机构：

[1] UCLouvain, Inst Mech Mat & Civil Engn, IMAP, Pl Sainte Barbe 2, B-1348 Louvain La Neuve, Belgium

[2] Normandie Univ, Grp Phys Mat, UMR 6634, CNRS, Ave Univ, F-76800 St Etienne Du Rouvray, France

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2023年 / 887卷

关键词：

beta metastable titanium alloys; LPBF; Work hardening; Strength; Ductility; TITANIUM-ALLOY; TENSILE PROPERTIES; HIGH-STRENGTH; FATIGUE RESISTANCE; MO ALLOYS; TI-6AL-4V; MICROSTRUCTURE; DUCTILITY; BEHAVIOR; DEFORMATION;

D O I：

10.1016/j.msea.2023.145755

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study proposes a thorough investigation of the mechanical properties of two beta metastable titanium alloys (Ti-12Mo and Ti-8.5Cr-1.5Sn (wt %)) processed by laser powder bed fusion. Particular emphasis is put on the influence of chemical homogenization and defects formation as a function of the processing parameters. It is demonstrated that the Transformation/Twinning - induced plasticity (TRIP/TWIP) mechanisms already revealed as beneficial in the case of wrought alloys, still bring a larger work hardening level and a larger ductility in the case of laser powder bed fusion (L-PBF) processing. Improved mechanical properties in terms of yield and ultimate tensile strengths with similar uniform deformation compared to the wrought counterparts are thus achieved after L-PBF and a very short annealing.

引用

页数：14

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