Effect of roll temperature on formation of refined grains of warm-rolled 7475 based aluminum alloy sheets.

• TANAKA Hiroki

  Research and Development Center, Sumitomo Light Metal Ind. LTD.

• ESAKI Hiroki

  Research and Development Center, Sumitomo Light Metal Ind. LTD.

• MINODA Tadashi

  Research and Development Center, Sumitomo Light Metal Ind. LTD.

• SHIBUE Kazuhisa

  Research and Development Center, Sumitomo Light Metal Ind. LTD.

• YOSHIDA Hideo

  Research and Development Center, Sumitomo Light Metal Ind. LTD.

Bibliographic Information

Other Title

• ７４７５系アルミニウム合金温間圧延材の微細粒組織形成に及ぼすロール温度の影響
• 7475ケイ アルミニウム ゴウキン オンカン アツエンザイ ノ ビサイリュウ ソシキ ケイセイ ニ オヨボス ロール オンド ノ エイキョウ

Abstract

The effect of temperature of the rolls from 2°C to 110°C in the warm roll process at 350°C was investigated in an attempt to refine the structure of the 7475 based aluminum alloy sheets including Zr which were heated after each roll pass. It was found that a lower temperature of the rolls led the alloy sheets to coarser grain structure after solution heat treatment. The {100} <011> Diagonal Cube component appeared in the surface layer, which suggested that strong shear bands had been formed during rolling in the layer. It was thought that these shear bands acted as nucleation sites for the recrystallized grains in solution heat treatment and contributed to the development of the coarse grain structure in the surface layer. Regarding the center region of the rolled plates, low temperature of the roll did not cause sufficient plastic deformation because of the cyclic occurrence of hardening and softening at the surface layer in the warm rolling process. Consequently, the center region also became coarse grain structure after solution heat treatment. On the contrary, in the case of a higher temperature of the rolls, the subgrain structure less than 3 μm was formed uniformly through the thickness of the plates after solution heat treatment with the strong Brass texture component.

Journal

• Journal of Japan Institute of Light Metals

  Journal of Japan Institute of Light Metals 52 (5), 231-235, 2002

  The Japan Institute of Light Metals

Keywords

• super metal
• warm rolling
• Al–Zn–Mg–Cu
• ODF

Details

• CRID: 1390282681314112896
• NII Article ID: 10008559348
• NII Book ID: AN00069773
• DOI: 10.2464/jilm.52.231
• COI: 1:CAS:528:DC%2BD38Xks1Wjsbs%3D
• ISSN: 18808018
• ISSN: 04515994
• NDL BIB ID: 6170382
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6170382
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed