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  Enhancing elevated temperature strength of copper containing aluminium alloys by forming L1(2) Al3Zr precipitates and nucleating theta '' precipitates on them

Makineni, S. K., Sugathan, S., Meher, S., Banerjee, R., Bhattacharya, S., Kumar, S., et al. (2017). Enhancing elevated temperature strength of copper containing aluminium alloys by forming L1(2) Al3Zr precipitates and nucleating theta '' precipitates on them. Scientific Reports, 7: 11154. doi:10.1038/s41598-017-11540-2.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-63AD-D Version Permalink: http://hdl.handle.net/21.11116/0000-0001-63B0-8
Genre: Journal Article

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 Creators:
Makineni, Surendra Kumar1, 2, Author              
Sugathan, Sandeep3, Author              
Meher, Subhashish4, Author              
Banerjee, Rajarshi4, Author              
Bhattacharya, Saswata3, Author              
Kumar, Subodh2, Author              
Chattopadhyay, Kamanio2, Author              
Affiliations:
1Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863384              
2Indian Institute of Science, Department of Materials Engineering, Bangalore, India, persistent22              
3Indian Institute of Technology, Department of Material Science and Metallurgical Engineering, Hyderabad, India, persistent22              
4University of North Texas, Center for Advanced Research and Technology and Department of Materials Science and Engineering, Denton, TX, USA, persistent22              

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Free keywords: SOLUTE-VACANCY BINDING; MECHANICAL-PROPERTIES; HEAT-TREATMENTS; INCONEL 718; ZR ALLOY; PHASE; EVOLUTION; MICROSTRUCTURE; PARTICLES; ZIRCONIUMScience & Technology - Other Topics;
 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 degrees C-250 degrees 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 degrees 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 Albased 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 degrees C with strength in excess of 260 MPa at 250 degrees C.

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Language(s): eng - English
 Dates: 20172017-09-11
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Degree: -

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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
 Creator(s):
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 7 Sequence Number: 11154 Start / End Page: - Identifier: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322