Journal ArticleDOI
Effect of aging treatment on the microstructure and mechanical properties of the similar and dissimilar 6061-T6/7075-T651 RSW joints
TLDR
The similar and dissimilar resistance spot weldability of 6061-T6 and 7075-T651 aluminium alloys was investigated in this article, where microstructure, microhardness, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD) and electron probe micro-analyses (EPMA) were conducted to study the effects aging heat treatment had on similar-and dissimilar RSW joints.Abstract:
The similar and dissimilar resistance spot weldability of 6061-T6 and 7075-T651 aluminium alloys was investigated in this study. Resistance spot weldability of commercial and aged samples in different variations was examined. The microstructure, microhardness, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD) and electron probe micro-analyses (EPMA) were conducted to study the effects aging heat treatment had on similar and dissimilar resistance spot welded (RSW) joints. In addition, tensile shear tests were performed to determine the mechanical properties and fracture behaviour of welded joints. The tests concluded that pre-weld aging heat treatment improves mechanical properties.read more
Citations
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Comparative study of the application of steels and aluminium in lightweight production of automotive parts
Miklós Tisza,Imre Czinege +1 more
TL;DR: A comparison between steel and aluminium application in the automotive industry is given from various points of view in this article, where the main topic is the sheet metal forming, in this paper the body-in-white manufacturing is the primary focus field, and an introduction on recent material developments in automotive industry concerning both the use of new generation high strength steels and light metals with particular emphasis on aluminium alloys is given.
Journal ArticleDOI
Microstructure and mechanical properties of 6061 Al alloy based composites with SiC nanoparticles
Alexander J. Knowles,Xia Jiang,M. Galano,Fernando Audebert,Fernando Audebert,Fernando Audebert +5 more
TL;DR: In this article, a powder metallurgy route consisting of high energy ball milling, hot isostatic pressing (HIP) and extrusion has proved a highly effective process for achieving a homogeneous distribution of particles with minimal clustering of the nanoparticles, at an industrially relevant scale.
Journal ArticleDOI
A review on resistance spot welding of aluminum alloys
Sunusi Marwana Manladan,Sunusi Marwana Manladan,Farazila Yusof,Singh Ramesh,M. Fadzil,Zhen Luo,Sansan Ao +6 more
TL;DR: In this article, a review on the resistance spot welding (RSW) of Al/Al alloys, Al alloys/steel, Al/Mg alloys and Al/Ti alloys with focus on structure, properties, and performance relationships is presented.
Journal ArticleDOI
Advances in friction stir spot welding
TL;DR: Friction stir spot welding (FSSW) is a variation of linear friction stir welding (FSW), which was invented to compete with resistance spot welding and riveting of lightweight alloys in the au...
Journal ArticleDOI
Fracture mechanisms of Al/steel resistance spot welds in lap shear test
TL;DR: In this paper, failure modes, mechanical strength and fracture mechanism of Al/steel resistance spot welds in lap shear test were investigated, and three major fracture mechanisms and failure modes were identified: semi-brittle or brittle fracture in the intermetallic compound (IMC) layer which led to interfacial failure, ductile fracture in aluminum fusion zone (FZ), and ductile fractures in the aluminum heat affected zone (HAZ) which lead to the engineering preferred button pullout failure.
References
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Journal ArticleDOI
Evolution of microstructure and mechanical properties in naturally aged 7050 and 7075 Al friction stir welds
TL;DR: In this article, the microstructural and mechanical properties of friction stir welded 7050-T7651 and 7075-T651 Al alloys were examined as a function of room temperature (natural) aging for up to 67,920h.
Journal ArticleDOI
Mechanisms of joint and microstructure formation in high power ultrasonic spot welding 6111 aluminium automotive sheet
D. Bakavos,Philip B. Prangnell +1 more
TL;DR: In this article, the authors used X-ray tomography, high resolution SEM, and EBSD, and dissimilar alloy welds to track the interface position and characterise the stages of weld formation, and microstructure evolution, as a function of welding energy.
Journal ArticleDOI
Influence of friction stir welding parameters on the microstructural and mechanical properties of AA 6016-T4 thin welds
Dulce Maria Rodrigues,Altino Loureiro,Carlos Leitão,R.M. Leal,R.M. Leal,B.M. Chaparro,Pedro Vilaça +6 more
TL;DR: In this paper, the microstructure and mechanical properties of friction stir welds were analyzed and compared with two different tools, and the results showed that the hot welds, obtained with the maximum tool rotational speed and the minimum traverse speed, have improved mechanical properties relative to the cold welds that were in undermatch condition relative to a base material.
Journal ArticleDOI
The effects of aging on machinability of 6061 aluminium alloy
Halil Demir,Süleyman Gündüz +1 more
TL;DR: In this article, the effect of artificial aging on the machinability of 6061 Al-alloy was investigated for the as-received, solution heat treated and then aged (SHTA) conditions.
Journal ArticleDOI
Microstructural and mechanical characterization of a superplastic 6xxx aluminum alloy
L.P. Troeger,Edgar A. Starke +1 more
TL;DR: In this paper, a new thermomechanical process was developed which produced a fine grain structure in an Al-Mg-Si-Cu alloy, with an average grain diameter of approximately 10 μm and an average aspect ratio near 1.6.