Full Text:
<16>
CLC number:
On-line Access: 2026-04-07
Received: 2025-10-15
Revision Accepted: 2025-12-11
Crosschecked: 0000-00-00
Cited: 0
Clicked: 11
Effect of varying strain rates on the local mechanical properties of aluminum alloy welded joints
| |||||||||||||
Chen LIU1*, Yansong WANG1*, Chenmeng WANG1,2, Hu Zhou1, Yuchen YANG1,3, Bangping GU1, Shibin SUN1, Long PAN4, Feilong LIU5, Guanhua XU6,7, Chuanxiao YANG1. Effect of varying strain rates on the local mechanical properties of aluminum alloy welded joints[J]. Journal of Zhejiang University Science A, 1998, -1(-1): .
@article{title="Effect of varying strain rates on the local mechanical properties of aluminum alloy welded joints",
author="Chen LIU1*, Yansong WANG1*, Chenmeng WANG1,2, Hu Zhou1, Yuchen YANG1,3, Bangping GU1, Shibin SUN1, Long PAN4, Feilong LIU5, Guanhua XU6,7, Chuanxiao YANG1",
journal="Journal of Zhejiang University Science A",
volume="-1",
number="-1",
pages="",
year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2500370"
}
%0 Journal Article
%T Effect of varying strain rates on the local mechanical properties of aluminum alloy welded joints
%A Chen LIU1*
%A Yansong WANG1*
%A Chenmeng WANG1
%A 2
%A Hu Zhou1
%A Yuchen YANG1
%A 3
%A Bangping GU1
%A Shibin SUN1
%A Long PAN4
%A Feilong LIU5
%A Guanhua XU6
%A 7
%A Chuanxiao YANG1
%J Journal of Zhejiang University SCIENCE A
%V -1
%N -1
%P
%@ 1673-565X
%D 1998
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2500370
TY - JOUR
T1 - Effect of varying strain rates on the local mechanical properties of aluminum alloy welded joints
A1 - Chen LIU1*
A1 - Yansong WANG1*
A1 - Chenmeng WANG1
A1 - 2
A1 - Hu Zhou1
A1 - Yuchen YANG1
A1 - 3
A1 - Bangping GU1
A1 - Shibin SUN1
A1 - Long PAN4
A1 - Feilong LIU5
A1 - Guanhua XU6
A1 - 7
A1 - Chuanxiao YANG1
J0 - Journal of Zhejiang University Science A
VL - -1
IS - -1
SP -
EP -
%@ 1673-565X
Y1 - 1998
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2500370
Abstract: Synchronized stretching in conjunction with digital image correlation (DIC) was employed to obtain stress-strain curves for multiple local regions of welded joints at varying strain rates. The material intrinsic damage model for each region was then fitted using the Ramberg-Osgood equation. As such, we investigated the effects of loads with different strain rates on welded members. The microstructural distribution laws in the local regions were elucidated using scanning electron microscopy (SEM) and optical metallurgical microscopy. Moreover, residual stress concentrations were revealed by employing multi-physics field simulations during the welding process, as well as by using the DIC method for full-field strain measurements. The results demonstrate that tensile specimens with varying strain rates exhibit ductile fracturing, and differ in strength and microhardness. The minimum strain-rate tensile strength recorded was 209.727 MPa, with an average microhardness of 72.66 HV0.3. Through simulations, it was further demonstrated that residual stresses and the softening zone cooperate during dynamic loading, resulting in preferential strain concentration. This study elucidates the mechanism by which the strain rate influences the mechanical properties of welded joints and the evolution of local mechanical behavior. It provides theoretical support and technical assurance for safe design and performance enhancement of aluminum alloy welded structures.
Open peer comments: Debate/Discuss/Question/Opinion
<1>