Title:
ALUMINUM ALLOY SHEET FOR AUTOMOTIVE MEMBER
Document Type and Number:
Japanese Patent JP2014062287
Kind Code:
A
Abstract:
To provide a 7000 system aluminum alloy sheet for automotive members having both of strength and stress corrosion crack resistance.
A structure formed by controlling a cold rolling rate and a solution heat treatment condition of an Al-Zn-Mg based aluminum alloy sheet manufactured by a conventional method and having a specified composition can have a small average crystal grain size, 15% or more of an average rate of a small tilt angle grain boundary having a tilt angle of 5-15° and 15-50% of an average rate of a large tilt grain boundary having a tilt angle of more than 15°, and also have high intensity, high ductility and SCC resistance required in an automotive member, such as an automotive structural member.
Inventors:
ARIGA YASUHIRO
MATSUMOTO KATSUSHI
MATSUMOTO KATSUSHI
Application Number:
JP2012207192A
Publication Date:
April 10, 2014
Filing Date:
September 20, 2012
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C22C21/10; C22C21/06; C22F1/047; C22F1/053; C22F1/00
Domestic Patent References:
| JP2006505695A | 2006-02-16 | |||
| JP2007100157A | 2007-04-19 | |||
| JPH03122243A | 1991-05-24 | |||
| JPH03122248A | 1991-05-24 | |||
| JPH111737A | 1999-01-06 | |||
| JP2010159489A | 2010-07-22 |
Other References:
梅澤 修: "ＳＥＭ−ＥＢＳＰの使い方", 軽金属, vol. 50, no. 2, JPN6016013965, 28 February 2000 (2000-02-28), JP, pages 86 - 93, ISSN: 0003297546
Attorney, Agent or Firm:
Takenaka Yoshimichi
Seiji Kameoka
Hironori Takenaka
Toru Sakatani
Seiji Kameoka
Hironori Takenaka
Toru Sakatani