Warm formability of aluminum-magnesium alloys

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Manufacturers have become increasingly interested in near-net-shape forming of aluminum alloys as a means to reduce production costs and the weight of aircraft and automotive structures. To achieve the ductilities required for this process, we have examined extended ductility of Al-Mg alloys in the warm forming, or Class I creep, regime. We have studied a high-purity, binary alloy of Al-2.8Mg and ternary alloys of Al-xMg-0.5Mn with Mg concentrations from 1.0 to 6.6 wt. %. Tensile tests, including strain rates-change tests, have been performed with these materials at temperatures of 300 and 400C over a range 10{sup {minus}4} to 2 {times} ... continued below

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8 p.

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Taleff, E. M.; Henshall, G. A.; Lesuer, D. R. & Nieh, T. G. May 27, 1994.

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Manufacturers have become increasingly interested in near-net-shape forming of aluminum alloys as a means to reduce production costs and the weight of aircraft and automotive structures. To achieve the ductilities required for this process, we have examined extended ductility of Al-Mg alloys in the warm forming, or Class I creep, regime. We have studied a high-purity, binary alloy of Al-2.8Mg and ternary alloys of Al-xMg-0.5Mn with Mg concentrations from 1.0 to 6.6 wt. %. Tensile tests, including strain rates-change tests, have been performed with these materials at temperatures of 300 and 400C over a range 10{sup {minus}4} to 2 {times} 10{sup {minus}2} s{sup {minus}1}. A maximum tensile failure strain of 325% for the binary alloy and a maximum of 125% in the ternary alloys have been measured. The experimental results have been used to evaluate the effects of solute concentration, microstructure, temperature, and strain rate on flow stress ({sigma}), elongation to failure (e{sub f}), and strain-rate sensitivity (m) of these alloys.

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8 p.

Notes

OSTI as DE94016170; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • 4. international conference of aluminum alloys,Atlanta, GA (United States),11-16 Sep 1994

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  • Other: DE94016170
  • Report No.: UCRL-JC--117528
  • Report No.: CONF-9409179--1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 10172267
  • Archival Resource Key: ark:/67531/metadc1339306

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  • May 27, 1994

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  • Nov. 28, 2018, 2:33 p.m.

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  • Dec. 6, 2018, 4:06 p.m.

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Taleff, E. M.; Henshall, G. A.; Lesuer, D. R. & Nieh, T. G. Warm formability of aluminum-magnesium alloys, article, May 27, 1994; California. (digital.library.unt.edu/ark:/67531/metadc1339306/: accessed January 20, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.