Warm formability of aluminum-magnesium alloys

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