FRAME MATERIAL FOR VEHICLE BODY AND ITS PRODUCTION

Japanese Patent JP3450209

B2

PROBLEM TO BE SOLVED: To produce a frame material for a vehicle body made of an aluminum alloy capable of absorbing higher impact energy, small in the dispersion of the quantity of the collision energy to be absorbed and more excellent in extrudability and bending workability as well and to provide a method for producing it.
SOLUTION: This frame material is the one composed of an aluminum alloy contg., by weight, 0.45 to 0.49% Mg and 0.30 to 0.36% Si and having 170 to 200 MPa 0.2% proof stress and 12 to 18% elongation. The aluminum alloy having the compsn. is subjected to homogenizing treatment at 530 to 600°C and is extruded at ≥530°C, and the extruded material is cooled to 100°C at a rate of ≥0.6°C per second and is moreover cooled to a room temp., and, within 120 hr cumulative holding time at <20°C, this is held at 20 to 40°C for ≥15 hr and is thereafter subjected to aging treatment at 165 to 210°C.

JP7156164	vehicle front structure
WO/2005/023627	MOTOR VEHICLE FOREBODY STRUCTURE
JP7409263	Vehicle fender support structure

Seizo Ueno
Shintaku Yasunaga
Ryuichi Hanaoka
Tatsuro Kasuga
Hideaki Takaishi
Yasuhisa Egawa
Go Aoki

JP1352699A

September 22, 2003

January 21, 1999

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THE FURUKAW ELECTRIC CO.,LTD.
Honda motor industry stock company

B62D21/15; C22C21/06; C22F1/00; C22F1/047; (IPC1-7): C22C21/06; B62D21/15; C22F1/00; C22F1/047

JP9316616A
JP967659A
JP6279960A

Shigeo Kohno

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