High strain rate deformation of aged TRIP Ti-10V-2Fe-3Al (wt.%) examined by in-situ synchrotron X-ray diffraction

被引：12

作者：

Ellyson, B. ^{[1
]}

Saville, A. ^{[2
]}

Fezzaa, K. ^{[2
]}

Sun, T. ^{[2
]}

Parab, N. ^{[2
]}

Finfrock, C. ^{[1
]}

Rietema, C. J. ^{[1
]}

Smith, D. ^{[1
]}

Copley, J. ^{[1
]}

Johnson, C. ^{[1
]}

Becker, C. G. ^{[1
]}

Klemm-Toole, J. ^{[1
]}

Kirk, C. ^{[3
]}

Kedir, N. ^{[4
]}

Gao, J. ^{[3
]}

Chen, W. ^{[3
,4
]}

Clarke, K. D. ^{[1
]}

Clarke, A. J. ^{[1
]}

机构：

[1] Colorado Sch Mines, George S Ansell Dept Met & Mat Engn, Golden, CO 80401 USA

[2] Argonne Natl Lab, Adv Photon Source, Lemont, IL USA

[3] Purdue Univ, Sch Aeronaut & Astronaut Engn, W Lafayette, IN USA

[4] Purdue Univ, Sch Adv Mat Engn, W Lafayette, IN USA

来源：

ACTA MATERIALIA | 2023年 / 245卷

基金：

美国国家科学基金会;

关键词：

Synchrotron radiation; Metastable TRIP titanium; Low temperature aging; High strain rate; ALLOY;

D O I：

10.1016/j.actamat.2022.118621

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transformation Induced Plasticity (TRIP) is a promising avenue for tailoring the work hardening response of metastable beta titanium (Ti) alloys. Here we show that aged TRIP Ti-10V-2Fe-3Al (wt.%) maintains higher elongations and flow stresses as strain rate increases, if phase stability and microstructural characteristics are tuned. Low temperature aging influences the matrix beta phase stability by omega phase precipitation, which affords a promising way to impact the TRIP effect and obtain desirable mechanical properties, ranging from high damping capacity to good strength/ductility combinations. Although TRIP is active during quasi-static and dynamic testing up to 2000 s(-1), increasing aging time and/or strain rate reduces the overall propensity for the TRIP effect and extent of transformation, which occurs rapidly just at the onset of yielding. TRIP with omega phase precipitation provides interesting alloying, microstructure, and property design strategies for engineering applications like lightweight protective structures, where high strains and the need for energy absorption are encountered.

引用

页数：10

共 20 条

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