https://hdl.handle.net/11256/421 2026-04-11T11:14:03Z https://hdl.handle.net/11115/226 Enhancement of strength and superplasticity in a 6061 Al alloy processed by equal-channel-angular-pressing W.J. Kim; J.K. Kim; T.Y. Park; S.I. Hong; D.I. Kim M; Y.S. Kim; J.D. Lee Pre-equal-channel-angular-pressing (ECAP) solution treatment combined with post-ECAP aging treatment has been found to be effective in enhancing the room-temperature strength of 6061 aluminum alloy. The largest increase in ultimate tensile strength (UTS) (=460 MPa) and yield stress (YS) (=425 MPa) is obtained in post-ECAP aged 6061 Al with six pressings. The strength increases by a factor of 1.4 when compared to T6 treated commercial 6061 Al. The strength of 6061 Al obtained in the present research is higher than that of ECA-pressed 6061 Al with pre-ECAP peak-aging treatment studied by other investigators. The more effective strengthening of post-ECAP low-temperature aging may be linked with the higher dislocation accumulation rate in the solutionized matrix and the presence of higher density particles in the aged matrix. Modest low-temperature (523 K) and high-temperature (813 K) superplasticity is observed in the ECAP 6061 Al, which may be a result of increased grain bundary area from grain refinement. 42 instances of 6061. 2013-12-03T00:00:00Z https://hdl.handle.net/11115/224 Forging of Discontinuously Reinforced Aluminum Composites A. Awadallah; J.J. Lewandowski DISCONTINUOUSLY REINFORCED aluminum (DRA) alloy metal-matrix composites (MMCs) represent an advanced aluminum materials concept whereby ceramic particles, or whiskers, are added to aluminum-base alloys through the use of either ingot-melting or casting and/or powder-metallurgy (P/M) techniques. In these materials systems, the reinforcing material (for example, silicon carbide, boron carbide, or boron nitride) is not continuous, but consists of discrete particles within the aluminum alloy matrix. About 15 references to 6061 throughout article. 2013-12-03T00:00:00Z https://hdl.handle.net/11115/225 Friction and Wear of Aluminum-Silicon Alloy Barrie S. Shabel; Douglas A. Granger; William G. Truckner ALUMINUM-SILICON ALLOYS are noted for their unique combination of desirable characteristics, including excellent castability and low density combined with good mechanical properties. One reference to 6061. 2013-12-03T00:00:00Z https://hdl.handle.net/11115/223 Forging of Aluminum Alloys G.W. Kuhlman ALUMINUM ALLOYS are forged into a variety of shapes and types of forgings with a broad range of final part forging design criteria based on the intended application. Aluminum alloy forgings, particularly closed-die forgings, are usually produced to more highly refined final forging configurations than hot-forged carbon and/or alloy steels. For some low- to intermediate-strength aluminum alloys, such as 1100 and 6061, flow stresses are lower than those of carbon steel. 6061 cited 18 times throughout article. 2013-12-03T00:00:00Z