Title:
チタン合金鍛造材
Document Type and Number:
Japanese Patent JP6851147
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a titanium alloy forging material capable of reducing variations in physical properties between the surface part and the inside of a large sized forging material while holding the mechanical properties.SOLUTION: There is provided a titanium alloy forging material consisting of a titanium alloy having Mo equivalent [Mo]represented by the following formula: [Mo]=[Mo]+[Ta]/5+[Nb]/3.6+[W]/2.5+[V]/1.5+1.25[Cr]+1.25[Ni]+1.7[Mn]+1.7[Co]+2.5[Fe] of 10 or more and less than 13, where [X] is content (mass%) of an element X, and having total area percentage of α phase and β phase of 99% or more, average particle diameter of primary α phase of 2.5 μm or less, average aspect ratio of primary α phase of 3.0 or less and difference between area percentages of primary α phases in the surface layer side and the inner side of 7.0% or less.SELECTED DRAWING: None
Inventors:
Koji Yamashita
Yoshinori Ito
Ono Kosuke
Yoshinori Ito
Ono Kosuke
Application Number:
JP2016116347A
Publication Date:
March 31, 2021
Filing Date:
June 10, 2016
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C22C14/00
Domestic Patent References:
| JP62267438A | ||||
| JP8158028A | ||||
| JP7252617A | ||||
| JP7150316A | ||||
| JP3240939A | ||||
| JP2012528932A | ||||
| JP2017002390A |
Foreign References:
| WO2016084980A1 |
Attorney, Agent or Firm:
Isono International Patent and Trademark Office