Low density titanium alloy, golf club head, and process for prouducing low density titanium alloy part

A low-density, titanium alloy technology, applied in the field of low-density titanium alloy to manufacture low-density titanium alloy parts, can solve the problems of high price and high cost, and achieve the effect of reducing cost

Inactive Publication Date: 2009-03-18
DAIDO STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, since the Ti-6Al-4V alloy contains expensive V, its cost is high

Method used

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  • Low density titanium alloy, golf club head, and process for prouducing low density titanium alloy part
  • Low density titanium alloy, golf club head, and process for prouducing low density titanium alloy part
  • Low density titanium alloy, golf club head, and process for prouducing low density titanium alloy part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 40 and comparative example 1 to 5

[0136] 1. Sample Preparation

[0137] The raw materials were weighed to obtain a predetermined composition, and melted in a plasma coagulation furnace to obtain a titanium alloy ingot with a mass of 6 kg and a diameter of 100 mm. Shown in Table 1 are the chemical compositions of the ingots obtained above.

[0138] Test pieces for high-temperature high-speed tensile tests were cut from each ingot.

[0139] In addition, each ingot was heated to 1000° C., and a round bar having a diameter of 20 mm was obtained by hot forging. In addition, heat treatment was performed at 750° C. for 2 hours under air cooling (AC). A No. 3 tensile test piece (diameter: 6.35 mm, evaluation distance: 25 mm) defined in ASTM E8 was prepared from the heat-treated round bar.

[0140] Table 1

[0141]

[0142]

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Abstract

The present invention relates to a low density titanium alloy, containing: 7.1 to 10.0 mass % of Al; 0.1 to 3.0 mass % of Fe; 0.01 to 0.3 mass % of O; 0.5 mass % or less of N; 0.5 mass % or less of C; and a remainder being Ti and inevitable impurities; a golf club head using the alloy; and a production method for a low density titanium alloy part using the alloy. The alloy of the invention may further contain 0.01 to 2.0 mass % of V. The alloy of the invention has higher specific strength as compared to the Ti-6Al-4V alloy, is excellent in hot workability, and is reduced in cost.

Description

technical field [0001] The present invention relates to low-density titanium alloy, golf head and the method for manufacturing low-density titanium alloy part, more particularly, the present invention relates to have high specific strength and the low-density titanium alloy of excellent hot workability, use this low-density titanium alloy A golf head made of a high-density titanium alloy and a method for manufacturing low-density titanium alloy components using the low-density titanium alloy. Background technique [0002] Titanium alloys in practical applications can be broadly divided into: [0003] (1) α-type alloys, which are formed from the α phase (low temperature phase) of the hexagonal close-packed lattice; [0004] (2) β-type alloys formed of a β-phase (high-temperature phase) of body-centered cubic crystallization; and [0005] (3) α+β type alloy having a mixed structure composed of α phase and β phase. [0006] Among the above-mentioned titanium alloys, the α+β-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00A63B53/04A63B102/32C22F1/00C22F1/18
CPCA63B2209/00A63B53/04C22C14/00A63B60/00
Inventor 小川道治野田俊治
Owner DAIDO STEEL CO LTD
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