Title:
衝撃吸収特性、形状凍結性及びフランジ部切断性に優れた、自動車、二輪車または鉄道車両用構造部材並びにその製造方法
Document Type and Number:
Japanese Patent JP5355905
Kind Code:
B2
Abstract:
The invention provides structural component for an automobile, two-wheeled vehicle or railcar excellent in impact-absorption property, shape fixability and flange cuttability, and method for producing the same, which structural component has a hat-like shape including vertical walls and flanges, wherein distal ends of the flanges contain 20 vol% or greater of austenite phase and have a cross-section hardness expressed as Vickers harness of 150 - 350, and a center regions of the vertical walls have, in a common cross-section with the flanges, a content of deformation-induced martensite phase exceeding that of the distal ends of the flanges by 10 vol% or greater and a cross-section hardness expressed as Vickers hardness that exceeds that of the distal ends of the flanges by 50 or greater.
Inventors:
Kimura Ken
Junichi Hamada
Naoto Ono
Haruhiko Kajimura
Toshio Tagami
Junichi Hamada
Naoto Ono
Haruhiko Kajimura
Toshio Tagami
Application Number:
JP2008046965A
Publication Date:
November 27, 2013
Filing Date:
February 28, 2008
Export Citation:
Assignee:
Nippon Steel & Sumikin Stainless Steel Co., Ltd.
International Classes:
C22C38/00; B21D22/20; B21D22/26; B62D29/00; B62K19/08; C21D7/02; C22C38/58; E04C3/07; B61D17/04
Domestic Patent References:
| JP2004114912A | ||||
| JP2001130444A |
Attorney, Agent or Firm:
Etsuichi Matsumoto
Shiina Akira
Shiina Akira