Equal channel angular pressing of a newly developed precipitation hardenable scandium containing aluminum alloy

Jahanzaib Malik, Wahaz Nasim, Bilal Mansoor, Ibrahim Karaman, Dinc Erdeniz, David C. Dunand, David N. Seidman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Precipitation hardenable aluminum alloys are well-known for their high strength-to-weight ratio, good thermal stability, electrical conductivity, and low cost. Equal channel angular pressing (ECAP) is proven to further improve the mechanical properties of metallic alloys through microstructure modification. In this work, ECAP of a recently developed, precipitation hardenable, cast Al–Er–Sc–Zr–V–Si alloy in peak-aged condition by route 4Bc was carried out to create an alloy with ultra-fine grain structure. The combined effect of grain refinement and precipitation on the tensile behavior and thermal stability of the ECAPed alloy is reported here. Improvement in yield strength and lack of strain hardening in ECAPed alloy were as expected. Microhardness contour plots with a narrower spread indicated enhancement in microstructural homogeneity after four ECAP passes as compared to the peak-aged condition. The variations in microhardness after annealing heat treatments at different temperatures highlighted the important role precipitates play in maintaining microstructure stability up to 250 °C in the ECAPed material.

Original languageEnglish
Title of host publicationLight Metals 2018
PublisherSpringer International Publishing
Pages423-429
Number of pages7
ISBN (Print)9783319722832
DOIs
Publication statusPublished - 1 Jan 2018
EventInternational symposium on Light Metals, 2018 - Phoenix, United States
Duration: 11 Mar 201815 Mar 2018

Publication series

NameMinerals, Metals and Materials Series
VolumePart F4
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Other

OtherInternational symposium on Light Metals, 2018
CountryUnited States
CityPhoenix
Period11/3/1815/3/18

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Keywords

  • Aluminum alloy
  • ECAP
  • Microstructure
  • Precipitation strengthening

ASJC Scopus subject areas

  • Metals and Alloys
  • Materials Chemistry
  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials
  • Energy Engineering and Power Technology

Cite this

Malik, J., Nasim, W., Mansoor, B., Karaman, I., Erdeniz, D., Dunand, D. C., & Seidman, D. N. (2018). Equal channel angular pressing of a newly developed precipitation hardenable scandium containing aluminum alloy. In Light Metals 2018 (pp. 423-429). (Minerals, Metals and Materials Series; Vol. Part F4). Springer International Publishing. https://doi.org/10.1007/978-3-319-72284-9_57