Quasi-static and dynamic tensile behaviors in electron beam welded Ti-6Al-4V alloy

Jing Zhang; Cheng Wen Tan; Yu Ren; Fu Chi Wang; Hong Nian Cai

doi:10.1016/S1003-6326(11)60675-4

Quasi-static and dynamic tensile behaviors in electron beam welded Ti-6Al-4V alloy

Jing Zhang, Cheng Wen Tan^*, Yu Ren, Fu Chi Wang, Hong Nian Cai

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

12 Citations (Scopus)

Abstract

The quasi-static and dynamic tensile behaviors in electron beam welded (EBW) Ti-6Al-4V alloy were investigated at strain rates of 10^-3 and 10³ s^-1, respectively, by materials test system (MTS) and reconstructive Hopkinson bars apparatus. The microstructures of the base metal (BM) and the welded metal (WM) were observed with optical microscope. The fracture characteristics of the BM and WM were characterized with scanning electronic microscope. In Ti-6Al-4V alloy joint, the flow stress of WM is higher than that of BM, while the fracture strain of WM is less than that of BM at strain rates of 10³ and 10^-3 s^-1, respectively. The fracture strain of WM has apparent improvement when the strain rate rises from 10^-3 to 10³ s^-1, while the fracture strain of BM almost has no change. At the same time, the fracture mode of WM alters from brittle to ductile fracture, which causes improvement of the fracture strain of WM.

Original language	English
Pages (from-to)	39-44
Number of pages	6
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	21
Issue number	1
DOIs	https://doi.org/10.1016/S1003-6326(11)60675-4
Publication status	Published - Jan 2011

Keywords

Ti-6Al-4V alloy
dynamic behavior
electron beam welding
fracture mode
quasi-static tensile behavior

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10.1016/S1003-6326(11)60675-4

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title = "Quasi-static and dynamic tensile behaviors in electron beam welded Ti-6Al-4V alloy",

abstract = "The quasi-static and dynamic tensile behaviors in electron beam welded (EBW) Ti-6Al-4V alloy were investigated at strain rates of 10-3 and 103 s-1, respectively, by materials test system (MTS) and reconstructive Hopkinson bars apparatus. The microstructures of the base metal (BM) and the welded metal (WM) were observed with optical microscope. The fracture characteristics of the BM and WM were characterized with scanning electronic microscope. In Ti-6Al-4V alloy joint, the flow stress of WM is higher than that of BM, while the fracture strain of WM is less than that of BM at strain rates of 103 and 10-3 s-1, respectively. The fracture strain of WM has apparent improvement when the strain rate rises from 10-3 to 103 s-1, while the fracture strain of BM almost has no change. At the same time, the fracture mode of WM alters from brittle to ductile fracture, which causes improvement of the fracture strain of WM.",

keywords = "Ti-6Al-4V alloy, dynamic behavior, electron beam welding, fracture mode, quasi-static tensile behavior",

author = "Jing Zhang and Tan, {Cheng Wen} and Yu Ren and Wang, {Fu Chi} and Cai, {Hong Nian}",

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T1 - Quasi-static and dynamic tensile behaviors in electron beam welded Ti-6Al-4V alloy

AU - Zhang, Jing

AU - Tan, Cheng Wen

AU - Ren, Yu

AU - Wang, Fu Chi

AU - Cai, Hong Nian

PY - 2011/1

Y1 - 2011/1

N2 - The quasi-static and dynamic tensile behaviors in electron beam welded (EBW) Ti-6Al-4V alloy were investigated at strain rates of 10-3 and 103 s-1, respectively, by materials test system (MTS) and reconstructive Hopkinson bars apparatus. The microstructures of the base metal (BM) and the welded metal (WM) were observed with optical microscope. The fracture characteristics of the BM and WM were characterized with scanning electronic microscope. In Ti-6Al-4V alloy joint, the flow stress of WM is higher than that of BM, while the fracture strain of WM is less than that of BM at strain rates of 103 and 10-3 s-1, respectively. The fracture strain of WM has apparent improvement when the strain rate rises from 10-3 to 103 s-1, while the fracture strain of BM almost has no change. At the same time, the fracture mode of WM alters from brittle to ductile fracture, which causes improvement of the fracture strain of WM.

AB - The quasi-static and dynamic tensile behaviors in electron beam welded (EBW) Ti-6Al-4V alloy were investigated at strain rates of 10-3 and 103 s-1, respectively, by materials test system (MTS) and reconstructive Hopkinson bars apparatus. The microstructures of the base metal (BM) and the welded metal (WM) were observed with optical microscope. The fracture characteristics of the BM and WM were characterized with scanning electronic microscope. In Ti-6Al-4V alloy joint, the flow stress of WM is higher than that of BM, while the fracture strain of WM is less than that of BM at strain rates of 103 and 10-3 s-1, respectively. The fracture strain of WM has apparent improvement when the strain rate rises from 10-3 to 103 s-1, while the fracture strain of BM almost has no change. At the same time, the fracture mode of WM alters from brittle to ductile fracture, which causes improvement of the fracture strain of WM.

KW - Ti-6Al-4V alloy

KW - dynamic behavior

KW - electron beam welding

KW - fracture mode

KW - quasi-static tensile behavior

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ER -

Quasi-static and dynamic tensile behaviors in electron beam welded Ti-6Al-4V alloy

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Keywords

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