Foaming of aluminum foam precursor during friction stir welding

Yoshihiko Hangai, Keisuke Takada, Ryoya Endo, Hidetoshi Fujii, Yasuhiro Aoki, Takao Utsunomiya

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Al-Si-Cu alloy ADC12 precursor, fabricated by the friction stir welding (FSW) route, was foamed during the traversing of an FSW tool along a steel plate. The ADC12 precursor can be sufficiently foamed at a tool traversing rate of v = 10 mm/min. The precursor began to foam as the tool approached the precursor and gradually foamed as the tool traversed. There is an optimum tool traversing rate to induce sufficient foaming of the precursor. ADC12 foam obtained with v = 10 mm/min sufficiently foamed, had a porosity of around p = 75%, and had pores throughout the entire foam with almost constant porosity along the traversing direction. ADC12 foam obtained with v = 20 mm/min did not sufficiently foam, had a porosity below p = 50%, and had dense parts without pores throughout the entire sample. The temperatures of the steel during FSW for v = 10 mm/min and v = 20 mm/min exhibited a similar tendency. The temperature of the ADC12 precursor during FSW for v = 20 mm/min was much lower than that for v = 10 mm/min. This is because the temperature of the precursor was not sufficient for the precursor to surpass the solid-liquid coexistence state because the high tool traversing rate resulted in insufficient heat input. v = 10 mm/min was sufficiently slow to provide the heat required for the precursor to surpass the solid-liquid coexistence state and to exhibit a higher temperature than the liquidus temperature, resulting in sufficient expansion of the ADC12 foam.

Original languageEnglish
Pages (from-to)109-115
Number of pages7
JournalJournal of Materials Processing Technology
Volume259
DOIs
Publication statusPublished - 2018 Sep 1

Fingerprint

Friction stir welding
Aluminum
Foams
Porosity
Steel
Temperature
Liquids

Keywords

  • Cellular materials
  • Foaming
  • Friction stir welding
  • Precursor

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

Cite this

Foaming of aluminum foam precursor during friction stir welding. / Hangai, Yoshihiko; Takada, Keisuke; Endo, Ryoya; Fujii, Hidetoshi; Aoki, Yasuhiro; Utsunomiya, Takao.

In: Journal of Materials Processing Technology, Vol. 259, 01.09.2018, p. 109-115.

Research output: Contribution to journalArticle

Hangai, Yoshihiko ; Takada, Keisuke ; Endo, Ryoya ; Fujii, Hidetoshi ; Aoki, Yasuhiro ; Utsunomiya, Takao. / Foaming of aluminum foam precursor during friction stir welding. In: Journal of Materials Processing Technology. 2018 ; Vol. 259. pp. 109-115.
@article{bb527f5c3f2a4f2abbc196b163d7337a,
title = "Foaming of aluminum foam precursor during friction stir welding",
abstract = "Al-Si-Cu alloy ADC12 precursor, fabricated by the friction stir welding (FSW) route, was foamed during the traversing of an FSW tool along a steel plate. The ADC12 precursor can be sufficiently foamed at a tool traversing rate of v = 10 mm/min. The precursor began to foam as the tool approached the precursor and gradually foamed as the tool traversed. There is an optimum tool traversing rate to induce sufficient foaming of the precursor. ADC12 foam obtained with v = 10 mm/min sufficiently foamed, had a porosity of around p = 75{\%}, and had pores throughout the entire foam with almost constant porosity along the traversing direction. ADC12 foam obtained with v = 20 mm/min did not sufficiently foam, had a porosity below p = 50{\%}, and had dense parts without pores throughout the entire sample. The temperatures of the steel during FSW for v = 10 mm/min and v = 20 mm/min exhibited a similar tendency. The temperature of the ADC12 precursor during FSW for v = 20 mm/min was much lower than that for v = 10 mm/min. This is because the temperature of the precursor was not sufficient for the precursor to surpass the solid-liquid coexistence state because the high tool traversing rate resulted in insufficient heat input. v = 10 mm/min was sufficiently slow to provide the heat required for the precursor to surpass the solid-liquid coexistence state and to exhibit a higher temperature than the liquidus temperature, resulting in sufficient expansion of the ADC12 foam.",
keywords = "Cellular materials, Foaming, Friction stir welding, Precursor",
author = "Yoshihiko Hangai and Keisuke Takada and Ryoya Endo and Hidetoshi Fujii and Yasuhiro Aoki and Takao Utsunomiya",
year = "2018",
month = "9",
day = "1",
doi = "10.1016/j.jmatprotec.2018.04.016",
language = "English",
volume = "259",
pages = "109--115",
journal = "Journal of Materials Processing Technology",
issn = "0924-0136",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Foaming of aluminum foam precursor during friction stir welding

AU - Hangai, Yoshihiko

AU - Takada, Keisuke

AU - Endo, Ryoya

AU - Fujii, Hidetoshi

AU - Aoki, Yasuhiro

AU - Utsunomiya, Takao

PY - 2018/9/1

Y1 - 2018/9/1

N2 - Al-Si-Cu alloy ADC12 precursor, fabricated by the friction stir welding (FSW) route, was foamed during the traversing of an FSW tool along a steel plate. The ADC12 precursor can be sufficiently foamed at a tool traversing rate of v = 10 mm/min. The precursor began to foam as the tool approached the precursor and gradually foamed as the tool traversed. There is an optimum tool traversing rate to induce sufficient foaming of the precursor. ADC12 foam obtained with v = 10 mm/min sufficiently foamed, had a porosity of around p = 75%, and had pores throughout the entire foam with almost constant porosity along the traversing direction. ADC12 foam obtained with v = 20 mm/min did not sufficiently foam, had a porosity below p = 50%, and had dense parts without pores throughout the entire sample. The temperatures of the steel during FSW for v = 10 mm/min and v = 20 mm/min exhibited a similar tendency. The temperature of the ADC12 precursor during FSW for v = 20 mm/min was much lower than that for v = 10 mm/min. This is because the temperature of the precursor was not sufficient for the precursor to surpass the solid-liquid coexistence state because the high tool traversing rate resulted in insufficient heat input. v = 10 mm/min was sufficiently slow to provide the heat required for the precursor to surpass the solid-liquid coexistence state and to exhibit a higher temperature than the liquidus temperature, resulting in sufficient expansion of the ADC12 foam.

AB - Al-Si-Cu alloy ADC12 precursor, fabricated by the friction stir welding (FSW) route, was foamed during the traversing of an FSW tool along a steel plate. The ADC12 precursor can be sufficiently foamed at a tool traversing rate of v = 10 mm/min. The precursor began to foam as the tool approached the precursor and gradually foamed as the tool traversed. There is an optimum tool traversing rate to induce sufficient foaming of the precursor. ADC12 foam obtained with v = 10 mm/min sufficiently foamed, had a porosity of around p = 75%, and had pores throughout the entire foam with almost constant porosity along the traversing direction. ADC12 foam obtained with v = 20 mm/min did not sufficiently foam, had a porosity below p = 50%, and had dense parts without pores throughout the entire sample. The temperatures of the steel during FSW for v = 10 mm/min and v = 20 mm/min exhibited a similar tendency. The temperature of the ADC12 precursor during FSW for v = 20 mm/min was much lower than that for v = 10 mm/min. This is because the temperature of the precursor was not sufficient for the precursor to surpass the solid-liquid coexistence state because the high tool traversing rate resulted in insufficient heat input. v = 10 mm/min was sufficiently slow to provide the heat required for the precursor to surpass the solid-liquid coexistence state and to exhibit a higher temperature than the liquidus temperature, resulting in sufficient expansion of the ADC12 foam.

KW - Cellular materials

KW - Foaming

KW - Friction stir welding

KW - Precursor

UR - http://www.scopus.com/inward/record.url?scp=85046018007&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85046018007&partnerID=8YFLogxK

U2 - 10.1016/j.jmatprotec.2018.04.016

DO - 10.1016/j.jmatprotec.2018.04.016

M3 - Article

AN - SCOPUS:85046018007

VL - 259

SP - 109

EP - 115

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

SN - 0924-0136

ER -