Enhancing elevated temperature strength of copper containing aluminum alloys by forming L1₂ Al₃Zr precipitates and nucleating θ" precipitates on them

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This article presents a new approach in designing an Al-based alloy through solid state precipitation route.

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9 p.

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Makineni, S. K.; Sugathan, Sandeep; Meher, Subhashish; Kumar, Subodh & Chattopadhyay, K. September 11, 2017.

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This article is part of the collection entitled: UNT Scholarly Works and was provided by the UNT College of Engineering to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 113 times. More information about this article can be viewed below.

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This article presents a new approach in designing an Al-based alloy through solid state precipitation route.

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9 p.

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Abstract: Strengthening by precipitation of second phase is the guiding principle for the development of a host of high strength structural alloys, in particular, aluminium alloys for transportation sector. Higher efficiency and lower emission demands use of alloys at higher operating temperatures (200 °C–250 °C) and stresses, especially in applications for engine parts. Unfortunately, most of the precipitation hardened aluminium alloys that are currently available can withstand maximum temperatures ranging from 150–200 °C. This limit is set by the onset of the rapid coarsening of the precipitates and consequent loss of mechanical properties. In this communication, we present a new approach in designing an Al-based alloy through solid state precipitation route that provides a synergistic coupling of two different types of precipitates that has enabled us to develop coarsening resistant high-temperature alloys that are stable in the temperature range of 250–300 °C with strength in excess of 260 MPa at 250 °C.

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  • Scientific Reports, 2017. London, UK: Nature Publishing Group

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  • Publication Title: Scientific Reports
  • Volume: 7
  • Peer Reviewed: Yes

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UNT Scholarly Works

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  • March 16, 2017

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  • August 21, 2017

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  • September 11, 2017

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  • Oct. 6, 2017, 9:34 a.m.

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  • Dec. 1, 2020, 4 p.m.

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Makineni, S. K.; Sugathan, Sandeep; Meher, Subhashish; Kumar, Subodh & Chattopadhyay, K. Enhancing elevated temperature strength of copper containing aluminum alloys by forming L1₂ Al₃Zr precipitates and nucleating θ" precipitates on them, article, September 11, 2017; London, United Kingdom. (https://digital.library.unt.edu/ark:/67531/metadc1010751/: accessed April 30, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT College of Engineering.

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