Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Titanium-copper alloy material, and heat-treating or hot-rolling method of titanium-copper alloy

a technology of titanium-copper alloy which is applied in the field of titanium-copper alloy material and heat treatment or hot rolling method of titanium-copper alloy, can solve the problems of difficult to completely lessen the hardness dispersion, unstable quality and subsequent working, and unelucidated which production factor mast significantly influences anisotropy, etc., and achieves the effect of facilitating post-forming

Inactive Publication Date: 2002-07-11
JX NIPPON MINING & METALS CO LTD
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] The present invention is based on the recognition of the above facts and provides a homogeneous titanium-copper alloy material, the post forming of which is facilitated.
[0016] The present invention also provides a heat-treating method and hot-rolling method of the titanium-copper alloy, which can suppress the spinodal decomposition and hence the dispersion of properties of the material. The quality of the titanium-copper alloy is, therefore, stabilized. The post-aging hardness becomes constant and the post formability is facilitated. As a result, the advantages attained are improvement of the dimension accuracy of the product, and, further, a product having complicated shape can be shaped.
[0017] It was discovered as a result of researches and experiments by the present inventors that the conditions of solution heat-treatment and the grain size of the material as solution-treated significantly affect the properties of the material treated subsequently. The present invention is based on this recognition and provides a wrought titanium-copper material having reduced anisotropy and improved bending formability required for the manufacturing of parts.

Problems solved by technology

As a result, the hardness and properties so largely vary that the quality and the subsequent working become unstable.
It is, however, difficult to completely lessen the hardness dispersion and to attain stable quality by these methods, because the spinodal decomposition has the characteristics as described above.
It has, however, not been elucidated which production factor mast significantly influences the anisotropy.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Titanium-copper alloy material, and heat-treating or hot-rolling method of titanium-copper alloy
  • Titanium-copper alloy material, and heat-treating or hot-rolling method of titanium-copper alloy

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0043] Titanium-copper alloys, which contain a specified mass % of Ti shown in Table 1, were used as the samples. The predetermined components were blended and melted in a vacuum melting-furnace to provide the titanium-copper alloys. The melt was cast into an ingot to provide a 3.5 kg ingot (30 mmt.times.80 mmw.times.150 mml). The riser portion of the ingot was cut off and subjected to scalping and milling of the edges in the transversal direction (10 mm at both edges). The scalped ingot was soaking-annealed in air at 1123K (850.degree. C.) for 1 hour. Hot rolling was then carried out to reduce the thickness from 27 mm to a predetermined thickness usually 8 mm thickness (8 mmt.times.70 mmw.times.562.5 mml). During the rolling, the surface temperature of the material was measured by a two-color type radiation thermometer. When the temperature of the material was lowered to a predetermined temperature, water cooling was carried out. Hardness of the material was then measured (referred...

example 2

[0048] A 3.5 kg titanium-copper alloy ingots (30 mmt.times.120 mmw.times.100 mml) having the components blended as shown in Table 1 were hot-rolled under the same process and conditions as in Example 1 to produce an 8-mm thick sheet.

[0049] Although the titanium-copper alloy {circle over (4)} was subjected to the production process until the final aging, the required properties, i.e., 800 N / mm.sup.2 or more of tensile strength and 2% or more of elongation, were not obtained. Cracks were generated during the hot-rolling of the comparative titanium-copper alloy {circle over (5)}, the subsequent working of which was therefore impossible.

[0050] The solution-treatment was carried out at 1173K (900.degree. C.) for 1 hour. The scalping was then again carried out. The cold-rolling was carried out to reduce thickness from 7.5 mm to 1.0 mm. Then, the final solution-treatment was carried out at a predetermined temperature under various conditions using a Greeble testing device, which can option...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Login to View More

Abstract

Spinodal decomposition of Cu alloy, which contains from 0.5 to less than 5.0% of Ti, is suppressed and a low hardness dispersion of Hv 40 or less is obtained over a sheet surface. In addition, an isotropy in terms of tensile strength in the vertical direction over the sheet surface is improved such that it is 50N / mm2 or less. In the hot-rolling of the alloy, it is cooled at a cooling speed of not less than 200K (200° C.) / second at least in a temperature range of between 773K (500° C.) and 573K (300° C.).

Description

BACKGROUND OF INVENTION[0001] 1. Field of Invention[0002] The present invention relates to a titanium-copper material, which contains not less than 0.5 mass % and less than 5.0 mass % of Ti, the balance being Cu and unavoidable impurities, which is homogeneously annealed and cooled so as not to cause spinodal decomposition and hence material hardening during the cooling after the solution treatment.[0003] The present invention also relates to a hot-rolling method and a heat treating method of the titanium-copper alloy, for generating the above properties.[0004] Furthermore, the present invention relates to a wrought titanium-copper alloy having improved homogeneity and bending property, consisting of not less than 0.5 mass % and less than 5.0 mass % of Ti, the balance being Cu and unavoidable impurities.[0005] The present invention also relates to a method for producing wrought titanium-copper alloy having reduced anisotropy and improved bending property, by means of subjecting an i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C9/00C22F1/08
CPCC22C9/00C22F1/08
Inventor YAMAMOTO, MICHIHARU
Owner JX NIPPON MINING & METALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com