Production and heat treatment of 6111 aluminum alloy sheet for car body panel application

Download

index.pdf

Date

2015

Author

Sevimli, Aylin

Metadata

Show full item record

Item Usage Stats

324
views

1394
downloads

Aluminum is one of the major candidates to supply sufficient weight reduction without missing mechanical properties and performance. Therefore, studies have been focused on improving properties of aluminum in automotive application since 1920s. Heat treatable aluminum alloy are used in car body panels of automotive application such as 2xxx, 7xxx and 6xxx series aluminum alloys base on the mechanical properties. On the other hand, based on physical and economical properties 6xxx series aluminum alloys are widely preferred by automotive manufactures. The car body panel needs to be stiff to carry bulk, to sustain stress and to be tough enough to satisfy risk of collision and impact. Besides, it is designed as light as possible for fuel consumption economy and driving performance. For these properties, 6xxx series are important options. In the North America, AA6111 aluminum alloy has been used especially for outer panel of car up to 1 mm thickness. For this purpose, firstly composition as 6111 aluminum alloy was adjusted and prepared AA6111 aluminum alloy was cast into ingots as plate shape. Later, the plate were firstly hot rolled then cold rolled to the desired thickness at convenient condition. Then, to get the desired strength and formability, precipitation strengthening mechanism was chosen to control easily. Hereby, T4 heat treatment was applied. By varying process parameters, the formation of a sheet has been studied and outcome of process have been inspected. Different temperatures and ageing times were studied to find the maximum strength values while considering cost and processing time. Hence, the convenient process parameters were determined to design aluminum sheet for car body panel applications considering sector requirement of performance and safety, lower cost and waste of energy and finally environmental affect.

Subject Keywords

Aluminum alloys., Plates (Engineering)., Aluminum alloys, Aluminum alloys

URI

http://etd.lib.metu.edu.tr/upload/12619626/index.pdf
https://hdl.handle.net/11511/25342

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Investigation of texture development and Portevin-Le Chatelier bands in 5754 aluminum alloy Aytuna, Orhan Berk; Efe, Mert; Department of Metallurgical and Materials Engineering (2019) Texture and microstructure are substantial parameters for final products which are made of non-heat treatable aluminum alloys such as 5xxx series. Optimizing these parameters is possible via deformation processes and following heat treatments. In this thesis; hot and cold rolling operation, as a basic deformation process, was applied to the aluminum and resulting copper, brass and cube type of texture was investigated. Effects of different annealing parameters on the deformed specimens were also analyzed wi...
Development of automobile chassis parts via aluminium extrusion and sand casting technology Demirel, Onur; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (2012) Due to the environmental issues related with fuel consumption and additionally passenger safety, aluminum space frame chassis is promising a big opportunity to design a lightweight structure with a high stiffness. Despite the lower stiffness and strength of aluminum in comparison to the conventional steel chassis, it can be compensated with changing thickness and design of structure by space frame geometry In this study, instead of using steel for automobile chassis, main goal is producing a space frame str...
Effect of welding parameters on the hot cracking behavior of 7039 aluminum - zinc alloy Akkuş, Mert; Gürbüz, Rıza; Batıgün, Caner; Department of Metallurgical and Materials Engineering (2010) 7039 aluminum alloys are widely being used in the aerospace, automotive and defense industries in which welding technique is used for their joining. The main problem encountered during the welding of 7039 aluminum alloy is hot cracking. The aim of this study is to understand the effect of welding parameters on the hot cracking behavior of 7039 aluminum alloy by using Modified Varestraint Test (MVT) with Gas Tunsgten Arc Welding (GTAW) technique. During tests, welding speed was selected as varying parameter,...
Analysis of magnesium addition, hydrogen porosity and T6 heat treatment effects on mechanical and microstructural properties of pressure die cast 7075 aluminum alloy Alat, Ece; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (2012) Aluminum alloys are having more attention due to their high specific stiffness and processing advantages. 7075 aluminum alloy is a wrought composition aluminum alloy in the Al-Zn-Mg-Cu series. Due to the significant addition of these alloying elements, 7075 has higher strength compared to all other aluminum alloys and effective precipitation hardenability characteristic. On the other hand, aluminum alloys have some drawbacks, which hinder the widespread application of them. One of the most commonly encounte...
The Effects of chromic acid anodizing on fatigue behavior of (AMS4050) 7050 T7451 aluminum alloy İlhan, Çağrı; Gürbüz, Rıza; Department of Metallurgical and Materials Engineering (2019) 7050 T7451 is a solution heat treated, stress relieved, and overaged aluminum alloy which has extensively used in aerospace industry. Chromic Acid Anodizing (CAA) is a treatment against corrosion by producing aluminum oxide layer (Al2O3) at the surface. Although corrosion resistance is increased by CAA, fatigue life of the material is affected inversely due to CAA process. CAA process consists of pre-treatments (degrease, etching etc.) and anodizing steps which have different effects on fatigue life of the ...

Citation Formats

A. Sevimli, “Production and heat treatment of 6111 aluminum alloy sheet for car body panel application,” M.S. - Master of Science, Middle East Technical University, 2015.