Forming of housing by impact extrusion press using ultrafine-grained semi-solid light metal

Keiko Natori, Tomoaki Yashima, Yoshihiko Arao, Tatsuya Tanaka

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The forming of thin-walled aluminium housing by impact backward extrusion process was conducted, and the influence of metal microstructure on its formability was investigated. Aluminium alloys of A3003, AC4CH-F and semi-solid state of AC4CH were used as test materials. Additionally, ultrafine-grained metal were fabricated by Equal-Channel Angular Pressing method using a die having channel, φ=90°, Ψ=15 °, from semi-solid AC4CH alloy. And then, cylindrical housings with 9.4mm in diameter and 0.5mm in thickness were formed from as-cast materials and ECAPed samples by impact backward extrusion at room temperature. As a result, press load required for extrusion was decreased using a material processed with increasing the number of ECAP. Vickers hardness of the products was greater than that of the materials before the forming; in the case of using ECAPed materials, the increment was relatively small. This implies that impact extrusion process is a kind of Severe Plastic Deformation that improves mechanical properties of metal materials. Ultrafine-grained semi-solid AC4CH alloy have more possibility to make the housings with further thin thickness than non-ECAP materials.

本文言語English
ホスト出版物のタイトルAdvances in Applied Mechanics Research, Conference Proceedings - 7th Australasian Congress on Applied Mechanics, ACAM 2012
出版社National Committee on Applied Mechanics
ページ409-418
ページ数10
ISBN(印刷版)9781922107619
出版ステータスPublished - 2012
外部発表はい
イベント7th Australasian Congress on Applied Mechanics, ACAM 2012 - Adelaide, SA, Australia
継続期間: 2012 12 92012 12 12

出版物シリーズ

名前Advances in Applied Mechanics Research, Conference Proceedings - 7th Australasian Congress on Applied Mechanics, ACAM 2012

Conference

Conference7th Australasian Congress on Applied Mechanics, ACAM 2012
CountryAustralia
CityAdelaide, SA
Period12/12/912/12/12

ASJC Scopus subject areas

  • Mechanics of Materials

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