Developing a strategy for the processing of age-hardenable alloys by ECAP at room temperature

Nguyen Quang, Chinh and Gubicza, Jenő and Czeppe, T. and Lendvai, János and Xu, C. (2009) Developing a strategy for the processing of age-hardenable alloys by ECAP at room temperature. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCURE AND PROCESSING, 516. pp. 248-252. ISSN 0921-5093

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It is well known that age-hardenable alloys are generally difficult to process by equal-channel angular pressing (ECAP) at room temperature because they invariably fail by catastrophic cracking or segmentation. Experiments were conducted on two supersaturated Al–Zn–Mg alloys with the objective of developing a strategy for the processing of age-hardenable alloys at room temperature. The results from these experiments demonstrate that successful pressing may be undertaken by conducting the pressing operation very quickly (typically within <10 min) following a water quench from the solution heat-treatment temperature. It is also shown that there is a significant increase in strength in the alloys even when the ECAP is performed through only a single pass. This latter result has important implications for industrial processing.

Item Type: Article
Uncontrolled Keywords: Shearing; STRAIN; ANGULAR EXTRUSION; MECHANICAL-PROPERTIES; MICROSTRUCTURAL EVOLUTION; ALUMINUM-ALLOY; GRAIN-REFINEMENT; ZN-MG ALLOYS; SEVERE PLASTIC-DEFORMATION; Supersaturated alloys; Precipitation; Equal-channel angular pressing (ECAP); Al-Zn-Mg alloys; Aging
Subjects: Q Science / természettudomány > QC Physics / fizika
Depositing User: MTMT SWORD
Date Deposited: 22 May 2014 20:04
Last Modified: 22 May 2014 20:06

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