An investigation on the formability of aerospace aluminum alloys AA2024 and AA7075 under warm hydroforming conditions

Gopal Parekh, Steven Hall, Muammee Koç

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To understand the forming limits of aerospace grade lightweight materials under warm forming conditions, two aluminum alloys (AI2024 and 7075) were tested under warm biaxial loading conditions. In the first phase of this study, sheet blanks of 150 × 150 mm were hydraulically bulged bi-axially without a counter die or restriction at two different strain rates, 0.0013 and 0.013s -1, and four different temperature levels, 25, 100, 200, and 300°C. Based on these tests, flow curves were obtained for different test conditions to reveal the effect and significance of temperature and strain rate on he forming of aluminum sheets. In the secord phase, the same size sheet blanks of two alloys were hydroformed into a closed, axisymmetric die under hydraulic pressures of 10 and 15 MPa, and at temperature levels of 25 and 200°C. Three parameters namely, cavity filling ratio (CFR), thickness, and hardness were measured and analyzed to understand he effect of pressure rate and temperature on forming limits.

Original languageEnglish
Title of host publicationTransactions of the North American Manufacturing Research Institution of SME 2010, NAMRI/SME
Pages491-498
Number of pages8
Publication statusPublished - 16 Nov 2010
Externally publishedYes
Event38th Annual North American Manufacturing Research Conference, NAMRC 38 - Kingston, ON, Canada
Duration: 25 May 201028 May 2010

Publication series

NameTransactions of the North American Manufacturing Research Institution of SME
Volume38
ISSN (Print)1047-3025

Other

Other38th Annual North American Manufacturing Research Conference, NAMRC 38
CountryCanada
CityKingston, ON
Period25/5/1028/5/10

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Keywords

  • AA2024
  • AA7075
  • Aluminum sheet
  • Formabillity
  • Lightweight material
  • Warm bulge: Test

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

Parekh, G., Hall, S., & Koç, M. (2010). An investigation on the formability of aerospace aluminum alloys AA2024 and AA7075 under warm hydroforming conditions. In Transactions of the North American Manufacturing Research Institution of SME 2010, NAMRI/SME (pp. 491-498). (Transactions of the North American Manufacturing Research Institution of SME; Vol. 38).