Accession Number:

AD0266715

Title:

DEVELOPMENT OF PARTIALLY VOLATILE BRAZING FILLER ALLOYS FOR HIGH-TEMPERATURE APPLICATION AND RESISTANCE TO OXIDATION

Descriptive Note:

Corporate Author:

IIT RESEARCH INST CHICAGO ILL

Report Date:

1961-06-01

Pagination or Media Count:

1.0

Abstract:

The mechanical properties and the resistance to oxidation were determined for 304 stainless steel joints brazed with 61 Ni-39 In, 65 Ni-17 Cr-9 In-9 Si, 33 Ni-33 Cr-17 In-17 Ge, and 35 N-24 Cr-26 In-15 Ge filler alloys. The special technique developed for brazing these joints involved 1 a method of preparation of the alloy so that a homogeneous and desired composition was available to fill the joint capillary, and 2 a method of volatilizing the melting point depressant which avoided the difficulty of boiling, while still obtaining sufficient volatilization to provide the required higher remelt temperature and good high-temperature properties. The highest shear strength was exhibited by the 65 Ni-17 Cr-9 Si alloy. The oxidation resistance of all joints was excellent. Joints brazed with the 61 Ni-39 In alloy showed considerable signs of oxidation after exposure to the open air for 500 hr at 1600 F. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE