Compressive behavior of a rolled open-cell aluminum foam

Vasanth Chakravarthy Shunmugasamy, Bilal Mansoor

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In this paper, we investigate compressive behavior of an open-cell 6101 aluminum foam in as-cast and as-rolled conditions. The as-cast foam with a relative density of ρ* = 7% was rolled to create two distinct as-rolled conditions with relative densities of ρ* = 29% and ρ* = 42%, respectively. The quasi-static and high strain rate compressive behavior was studied over a range of strain rates 10−4 /s ≤ ε̇ ≤ 5 × 103/s. It was found that the internal structure of as-rolled foams significantly differs from as-cast foams. Rolling causes plastic bending, stretching, and buckling of individual struts and ligaments, resulting in reduced pore size and an increase in relative density. In as-rolled condition, compressive plateau strength increased with increase in ρ*; it was up to 26 times higher as compared to the as-cast condition. In the range of strain rates considered here, strain rate sensitive compressive behavior was not observed; instead, the intrinsic strain rate sensitivity of parent material governed the compressive behavior in all conditions. Our results demonstrate the feasibility of using conventional rolling as a simple way to modify internal structure and relative density of as-cast foams, thereby enabling mechanical properties more attractive for various structural applications.

Original languageEnglish
Pages (from-to)281-294
Number of pages14
JournalMaterials Science and Engineering A
Volume715
DOIs
Publication statusPublished - 7 Feb 2018

Fingerprint

Aluminum
foams
strain rate
Foams
casts
Strain rate
aluminum
cells
struts
ligaments
Bending (deformation)
Struts
Ligaments
buckling
Density (specific gravity)
Compressive strength
Stretching
Pore size
Buckling
plateaus

Keywords

  • Aluminum
  • Energy absorption
  • Open-cell foams
  • Rolling
  • Strain rate

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Compressive behavior of a rolled open-cell aluminum foam. / Shunmugasamy, Vasanth Chakravarthy; Mansoor, Bilal.

In: Materials Science and Engineering A, Vol. 715, 07.02.2018, p. 281-294.

Research output: Contribution to journalArticle

Shunmugasamy, Vasanth Chakravarthy ; Mansoor, Bilal. / Compressive behavior of a rolled open-cell aluminum foam. In: Materials Science and Engineering A. 2018 ; Vol. 715. pp. 281-294.
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