Title: Method for making fine-grained Cu-Ni-Sn alloys

Abstract: Cu-Ni-Sn alloys are of commercial interest in applications which involve shaping by mechanical working of an alloy as well as in casting applications. Disclosed is a method which is particularly beneficial for casting and forging applications, i.e. applications which involve only limited amounts of working or none at all. The disclosed method allows the production of a fine-grained structure in a Cu-Ni-Sn alloy by a thermal treatment which calls for maintaining the alloy at three specified distinct temperature levels for specified time periods. The resulting fine-grained alloy may undergo further processing as may be beneficial, e.g., to develop desired levels of strength and ductility.

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Other info:

Inventors: Plewes, John T. (Berkeley Heights, NJ, US)

Application Number: 871452
Filing Date: 1978-01-23
Publication_date: 1979-03-06
Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ)
Primary Class(es): 148/501 148/412, 148/685
Other Classes:
US Patent Ref:

1816509	Jul, 1931	Wise	75/154.
4012240	Mar, 1977	Hinrichsen et al.	148/11.

Other Refs:
Primary Examiner: Stallard, W.
Assistant Examiner:
Attorney: Wilde; Peter V. D.