Load-bearing capacity of hybrid riv-bonded aluminum-magnesium joints at quasi-static and cyclic loadings

被引：6

作者：

Domitner, Josef ^{[1
]}

Silvayeh, Zahra ^{[1
]}

Predan, Jozef ^{[2
]}

Auer, Peter ^{[1
]}

Stippich, Jennifer ^{[1
]}

Enzinger, Norbert ^{[1
]}

Gubeljak, Nenad ^{[2
]}

机构：

[1] Graz Univ Technol, Inst Mat Sci Joining & Forming, Res Grp Lightweight & Forming Technol, Inffeldgasse 11-1, A-8010 Graz, Austria

[2] Univ Maribor, Fac Mech Engn, Chair Mech, Smetanova Ulica 17, Maribor 2000, Slovenia

来源：

JOURNAL OF MANUFACTURING PROCESSES | 2023年 / 87卷

关键词：

Lightweight design; Car body manufacturing; Body; -in; -white; Aluminum alloy; Magnesium alloy; Riv-bonding; Adhesive; Self -piercing riveting; SPR; Static strength; Fatigue performance; FATIGUE BEHAVIOR; ALLOYS; SIMULATION; PREDICTION; PARAMETERS; STRENGTH;

D O I：

10.1016/j.jmapro.2023.01.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The load-bearing capacity of hybrid riv-bonded aluminum-magnesium lap joints under shear-tensile loading was studied with particular focus on their static strength and fatigue performance. Sheets of 1.5 mm-thick EN AW6016-T4 aluminum alloy were joined with sheets of 2 mm-thick AZ91 magnesium alloy using two highstrength steel rivets and epoxy-based adhesive. Local deformation-induced fracture of the comparatively inductile magnesium alloy sheet at the rivet holes during riveting at room temperature was intentionally tolerated. The lap joints were heat-treated to peak-age the aluminum alloy (condition T4 -> T6) and to cure the adhesive between the sheets. Characteristic cross-section features and hardness maps were measured for assessing the quality of the joints and thus for proving the general capability of the riv-bonding process. The fracture behavior of the inductile magnesium alloy sheet determined the static strength as well as the fatigue performance at load ratios of 0.1 and 0.5. Both, load amplitude and mean load, influenced the site of fatigue crack initiation and the path of crack propagation. Local fracture of the inductile magnesium alloy sheet at the rivet hole is tolerable, if riv-bonded lap joints are just exposed to cyclic loading with low amplitudes.

引用

页码：133 / 140

页数：8

共 64 条

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