Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Physical Simulation of heat affected zoneof Aluminium butt weld
University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
2020 (English)Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The demand for better and more efficient metallurgical processes that will guarantee quality product at low cost, stimulates intensive research to reach these goals. In this respect, any full-scale industrial experiments are not cost effective due to material and time wastage, but physical simulation does. The application of Gleeble System in Physical simulation research has found broad application in nearly all spheres of metal processing industries. These applications include process optimization, material characterization, etc. Physical simulation unlike computer simulation being very close if not the same to the real-world process. It can beused to reproduce on laboratory scale the same process that happened in the real industrial processing conditions. In this work physical simulation of heat-affected zone (HAZ) of aluminium butt weld of AW6005-T6 extruded wrought aluminium was characterized through series of experiments.The base material (BM) was welded using standard metal inert gas (MIG) pulse welding process. The following welding parameters were set in the welding machine for the welding experiment, current = 120 A, wire feed speed = 5.3 m/min, voltage = 19.25 V, weldingspeed = 10 mm/s. The actual weld thermal cycle was recorded with the help of thermocouples (TC) attached to the plate. This weld thermal cycle was used as an input in the Gleeblefor physical simulation of the BM. In the Gleeble experiment, the BM was subjected to three different peak temperatures 350 °C, 450 °C, and 550 °C for heat treatment purposes during which the temperature distribution was measured and evaluated. At room temperature, the three peak temperature heat-treated samples were subjected to tensile test using the Gleeble testing machine.The weld, heat treated, and temperature distribution samples were metallographically prepared for microstructural analysis which after hardness test was carried out on these sample.The respective resultant HAZ of the various sample was analysed. Optical microscopy (OM)was used to evaluate their Microstructure. Characterization of the HAZ was successfully achieved for the proposed base materials. The weld samples were observed to have HAZ stretch beyond 18 mm from the weld centre line (WCL) which could be attributed to high heat conductivity of the aluminium and the weld parameters used. The HAZ exhibit low material properties relative to the BM. The physical simulated samples reproduced these trends as in the weld samples successfully as observed from the analysis.

Place, publisher, year, edition, pages
2020. , p. 31
Keywords [en]
Physical simulation, Gleeble, Aluminium alloys, MIG pulse Welding, HAZ, Butt joint, AW 6005 - T6, Thermal cycle, Metallography, Mechanical properties.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:hv:diva-15918Local ID: EXP800OAI: oai:DiVA.org:hv-15918DiVA, id: diva2:1471166
Subject / course
Mechanical engineering
Educational program
Produktionsteknik, magister
Supervisors
Examiners
Available from: 2020-10-12 Created: 2020-09-28 Last updated: 2020-10-12Bibliographically approved

Open Access in DiVA

No full text in DiVA

By organisation
Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering
Mechanical Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 240 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf