High strength and high rigidity aluminum-based alloy and production method therefor

• US 5,858,131 A
• Filed: 05/14/1997
• Issued: 01/12/1999
• Est. Priority Date: 11/02/1994
• Status: Expired due to Term

• Current Assignee: Akihisa Inoue, Tsuyoshi Masumoto, Yamaha Corporation
• Original Assignee: Akihisa Inoue, Tsuyoshi Masumoto, Yamaha Corporation
• Inventors: Kimura, Hisamichi, Inoue, Akihisa, Horio, Yuma
• Primary Examiner(s): WYSZOMIERSKI, GEORGE P
• Application Number:
  US08/856,200
• Time in Patent Office: 608 Days
• Field of Search: 148/403, 148/415, 148/437, 420/529, 420/538, 420/550, 420/551, 420/552, 420/553
• US Class Current: 148/403
• CPC Class Codes: B22F 9/008 Rapid solidification processing
• CPC Class Codes: C22C 1/0416 Aluminium-based alloys
• CPC Class Codes: C22C 21/00 Alloys based on aluminium
• CPC Class Codes: C23C 26/02 applying molten material to the substrate
• CPC Class Codes: C23C 30/00 Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process C23C26/00, C23C28/00 take precedence
• CPC Class Codes: C23C 6/00 Coating by casting molten material on the substrate

Abstract

An aluminum-based alloy having the general formula Al₁₀₀ -(a+b)Q_a M_b (wherein Q is V, Mo, Fe, W, Nb, and/or Pd; M is Mn, Fe, Co, Ni, and/or Cu; and a and b, representing a composition ratio in atomic percentages, satisfy the relationships 1≦a≦8, 0<b<5, and 3≦a+b≦8) having a metallographic structure comprising a quasi-crystalline phase, wherein the difference in the atomic radii between Q and M exceeds 0.01 Å, and said alloy does not contain rare earths, possesses high strength and high rigidity. The aluminum-based alloy is useful as a structural material for aircraft, vehicles and ships, and for engine parts; as material for sashes, roofing materials, and exterior materials for use in construction; or as materials for use in marine equipment, nuclear reactors, and the like.

Claims

1. An aluminum-based alloy of high strength and high rigidity consisting essentially of a composition represented by the general formula Al₁₀₀ -(a+b)Q_a M_b ;

wherein Q is at least one metal element selected from the group consisting of V, Mo, Fe, W, Nb, and Pd;

M is at least one metal element selected from the group consisting of Mn, Fe, Co, Ni, and Cu; and

a and b, which represent a composition ratio in atomic percentages, satisfy the relationships 1≦

a≦

8, 0<

b<

5, and 3≦

a+b≦

8;

said aluminum-based alloy having a metallographic structure comprising a quasi-crystalline phase, wherein the difference in the atomic radii between Q and M exceeds 0.01 Å

, and said alloy does not contain rare earths.

2. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein said metallographic structure is a multiphase structure comprising a quasi-crystalline phase and an aluminum phase.

3. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein said metallographic structure is a multiphase structure comprising a quasi-crystalline phase and a metal solid solution having an aluminum matrix.

4. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein said metallographic structure is a multiphase structure comprising a quasi-crystalline phase and a stable or metastable intermetallic compound phase.

5. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein said metallographic structure is a multiphase structure comprising a quasi-crystalline phase, an amorphous phase, and a metal solid solution having an aluminum matrix.

6. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein a+b is not more than 6.

7. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein a is not less than 2.

8. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein a is not more than 6.

9. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein b is not less than 1.

10. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein b is not more than 3.

11. An aluminum-based alloy of high strength and high rigidity according to claim 1, wherein b is not more than 2.