Title:
表層部をナノ結晶化させた金属製品の製造方法
Document Type and Number:
Japanese Patent JP4112952
Kind Code:
B2
Abstract:
A method of production of a metallic product with a nanocrystallized surface layer comprising subjecting a surface layer of a metallic product to ultrasonic impact treatment by one or more ultrasonic indenters vibrating in a plurality of directions, then subjecting the surface layer subjected to the ultrasonic impact treatment to heat treatment at a low temperature to cause precipitation of nanocrystals.
Inventors:
Chu Ishikawa
Kiyotaka Nakajima
Tetsuro Nose
Tomonori Tominaga
Higo Yakichi
Kazuki Takashima
Kiyotaka Nakajima
Tetsuro Nose
Tomonori Tominaga
Higo Yakichi
Kazuki Takashima
Application Number:
JP2002334501A
Publication Date:
July 02, 2008
Filing Date:
November 19, 2002
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C21D1/04; C21D7/00; C22F1/02; C21D7/04; C22C1/00; C22F1/00; C22F1/06; C22F1/18; C22F3/00
Domestic Patent References:
| JP2003201549A |
Attorney, Agent or Firm:
Etsuichi Matsumoto
Shiina Akira
Shiina Akira