Title:
ＴｉＡｌ系耐熱部材
Document Type and Number:
Japanese Patent JP6540075
Kind Code:
B2
Abstract:
The present invention relates to a Ti-Al-based heat-resistant member including a Ti-Al-based alloy which includes: 28.0 mass% to 35.0 mass% of Al; 1.0 mass% to 15.0 mass% of at least one selected from the group consisting ofNb, Mo, W and Ta; 0.1 mass% to 5.0 mass% of at least one selected from the group consisting of Cr, Mn and V; and 0.1 mass% to 1.0 mass% of Si, with the balance being Ti and unavoidable impurities, in which a whole or a part of a surface of the Ti-Al-based heat-resistant member includes a hardened layer as a surface layer, the hardened layer having a higher hardness than an inside of the Ti-Al-based heat-resistant member, and the Ti-Al-based heat-resistant member has a hardness ratio (a hardness of the surface layer / a hardness of the inside) of 1.4 to 2.5.
Inventors:
Sadahiko Koyanagi
Hiroyuki Takabayashi
Yoshinori Sumi
Hiroyuki Takabayashi
Yoshinori Sumi
Application Number:
JP2015028942A
Publication Date:
July 10, 2019
Filing Date:
February 17, 2015
Export Citation:
Assignee:
Daido Steel Co., Ltd.
International Classes:
C22C14/00; B22D21/06; B22D27/04; F01D5/28; F01D25/00; F02B39/00; F02C7/00
Domestic Patent References:
| JP7252562A | ||||
| JP3277736A | ||||
| JP8176709A | ||||
| JP2007303441A | ||||
| JP4116130A |
Attorney, Agent or Firm:
Fumio Hatakeyama