On the low-cycle fatigue behavior of thermo-mechanically processed high-strength aluminum alloys

被引：17

作者：

Sajadifar, S. V. ^{[1
]}

Scharifi, E. ^{[2
]}

Wegener, T. ^{[1
]}

Krochmal, M. ^{[1
]}

Lotz, S. ^{[2
]}

Steinhoff, K. ^{[2
]}

Niendorf, T. ^{[1
]}

机构：

[1] Univ Kassel, Inst Mat Engn, Monchebergstr 3, D-34125 Kassel, Germany

[2] Univ Kassel, Met Forming Technol, Kurt-Wolters-Str 3, D-34125 Kassel, Germany

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2022年 / 156卷

关键词：

High-strength aluminum alloys; Low-cycle fatigue; Thermo-mechanical processing; Microstructure; Fracture; STRESS-STRAIN RESPONSE; CRACK-GROWTH-BEHAVIOR; MG-CU ALLOY; HEAT-TREATMENT; INTERMETALLIC PARTICLES; GRAIN-SIZE; LIFE; MICROSTRUCTURE; PROPAGATION; DEFORMATION;

D O I：

10.1016/j.ijfatigue.2021.106676

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present work low-cycle fatigue experiments were carried out on thermo-mechanically processed AA6082 and AA7075 sheets to evaluate mechanical properties under cyclic loading. Different cooling rates imposed by use of tempered forming tools after solutionizing and subsequent aging treatment led to the formation of precipitates with differing sizes and morphologies. Specimens thermo-mechanically processed in tools with temperatures of 24 C and 200 C showed superior mechanical properties under both monotonic and cyclic loading. Different behavior was observed for the specimens formed in the tool with a temperature of 350 C. Based on thorough analysis of prevalent microstructural features, processing-property-damage relationships are established pointing at the major impact of the thermal history on the final performance of the high-strength aluminum alloys in focus.

引用

页数：10

共 74 条

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