Effect of temperature on the fracture behaviour of heat-treated Al-Cu-Li alloy laser welds under low-cycle fatigue loading

被引：9
作者：
Malikov, Alexander G. [1 ]
Karpov, Evgenij V. [1 ,2 ]
Orishich, Anatoliy M. [1 ]
机构：
[1] Russian Acad Sci, Khristianovich Inst Theoret & Appl Mech, Siberian Branch, Inst Skaya Str 4-1, Novosibirsk 630090, Russia
[2] Russian Acad Sci, Lavrentiev Inst Hydrodynam, Siberian Branch, Novosibirsk, Russia
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2020年 / 43卷 / 06期
基金：
俄罗斯科学基金会;
关键词：
aluminium-lithium alloy; fatigue strength; heat treatment; laser welding; microstructure; tensile strength; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; CRACK RETARDATION; ALUMINUM-ALLOY; T-JOINTS; MICROSTRUCTURE; MG; AA2198; PROPAGATION; PREDICTION;
D O I：
10.1111/ffe.13218
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The paper presents the results of the studies of the effect of temperature on the fracture behaviour of Al-Cu-Li alloy laser welds under low-cycle fatigue loading. The mechanical properties and the microstructure of the welded joints without and after postweld heat treatment (PWHT) were investigated. The tensile strength and the low-cycle fatigue resistance of the welded joints were studied at various test temperatures (20 degrees C, 85 degrees C and - 60 degrees C). It was been found that heating up to 85 degrees C and cooling down to -60 degrees C reduced the maximum number of loading cycles of the welded joints after PWHT by 1.5-2.0 times compared with that at a test temperature of 20 degrees C.
引用
收藏
页码：1250 / 1261
页数：12
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[21]   Effect of Mo on Elevated-Temperature Low-Cycle Fatigue Behavior of Al-Si 356 Cast Alloy [J].
Chen, S. ;
Liu, K. ;
Chen, X-G .
LIGHT METALS 2020, 2020, :261-266
[22]   Fatigue Fracture Process of Extruded and Heat-Treated Al-Zn-Mg Alloys under Uniaxial Cyclic Loading with Positive Stress Ratio [J].
Tokuno, Kazushige ;
Hagino, Masahiro ;
Takata, Ken ;
Tsutamori, Hideo .
MATERIALS TRANSACTIONS, 2025, 66 (06) :712-723
[23]   Crack initiation mechanism of a silicide-containing high-strength Ti-5Al-7.5V alloy under low-cycle fatigue loading [J].
Wu, Zhihong ;
Kou, Hongchao ;
Li, Jinshan ;
Chen, Nana ;
Xi, Zhicheng ;
Sun, Fan ;
Prima, Frederic .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2023, 865
[24]   Improving the low-cycle fatigue properties of laser-welded Al-Zn-Mg-Cu alloy joints using double-sided ultrasonic impact treatment [J].
Chen, Furong ;
Liu, Chenghao .
MATERIALS RESEARCH EXPRESS, 2021, 8 (09)
[25]   Mechanical behaviour and low cycle fatigue performance of plasma sprayed ZrO2 coated Al-7075-T6 alloy under subzero temperature condition [J].
Ganesan, Karthick ;
Selvan, Dharani Kumar ;
Madhu, M. ;
Archana, G. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2025, 1016
[26]   Effects of warm laser peening at elevated temperature on the low-cycle Cross Mark fatigue behavior of Ti6Al4V alloy [J].
Zhou, J. Z. ;
Meng, X. K. ;
Huang, S. ;
Sheng, J. ;
Lu, J. Z. ;
Yang, Z. R. ;
Su, C. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 643 :86-95
123