Title:
LIGHT-WEIGHT HEAT RESISTANT ALLOY AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2022145613
Kind Code:
A
Abstract:
To provide a high strength and light-weight TiAl-based alloy having heat resistance at low cost.SOLUTION: When an amount of nitrogen is set to N, an amount of oxygen allowing as inevitable impurities is set to O, an amount of aluminum is set to Al, an amount of niobium is set to Nb, an amount of chromium is set to Cr, an amount of tungsten is set to W, and an amount of boron is set to B, with % as at.% 1%≤N≤7%, 0%≤O≤3% and O≤N, 0.37≤(Al-N-0.5O)/(100-4N-1.5O)≤0.50, 6%≤Nb≤14%, 0%≤Cr≤6%, 0.3%≤W≤2%, 0%≤B≤0.3%, and a total of 1% or less of other elements mixed or added are allowed, the balance being Ti, and having a composition that satisfies 1.0≤(Ti-2N)/(Nb+Cr+W)≤3.5.SELECTED DRAWING: Figure 5
Inventors:
TOYAMA FUMIO
MIYAMOTO NOBUKI
MIYAMOTO NOBUKI
Application Number:
JP2022038867A
Publication Date:
October 04, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
UNIV SHIMANE
KIGUCHI TECHNICS INC
KIGUCHI TECHNICS INC
International Classes:
C22C14/00; C22C1/04
Attorney, Agent or Firm:
Yoshihiro Tanabe