DEVELOPMENT OF COLUMBIUM-BASE ALLOYS

reportActive / Technical Report | Accession Number: AD0410771 | Open PDF

Abstract:

The influence of carbon additions on the proper ties of a complex niobium alloy, Nb-10W-5V-1Zr B-77, was investigated. Carbon additions of 0.077 and 0.15 wo refined the as-cast grain size and increased hardness. For the conditions of heat treatment investigated, the carbon level had no effect on the 1205 C 2200 F stress rupture strength of B-77, but the carbon containing al loys had higher rupture strains than low carbon B-77. Heat treatment studies did not show any evidence of precipitation hardening effects, however solution annealed and cold rolled B-77 0.15 C material gave significantly higher hot hardness values than solution annealed materials, suggesting that carbide precipitation on disloca tions was contributing to high temperature strength. Preliminary data showed grain boundary sliding occurred in B-77 during creep testing at 1205 C 2200 F.

Author(s):
Begley, Richard T. ; Buckman, R. W. ; Godshall, John L. ; Stickler, Roland
Author Organization(s):
WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA
Descriptive Note:
Final rept. 1 Jan 1962-1 Mar 1963
Supplementary Note:
Report on Metallic Materials. DOI: 10.21236/AD0410771
Pagination:
0111

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
WADC-TR-57-344
Contract/Grant Number(s):
AF 33(616)-6258
Task Number(s):
735101
Project Number(s):
7351
Monitor Series:
TR-57-344, WADC
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_6.2.1_Information Sharing; JCA_6.2.2_Computing Services; JCA_6_Net Centric; JCA_5.3_Planning; JCA_6.2_Enterprise Services; JCA_4.2.3_Manage Global Supplier Networks; JCA_4.2_Supply; JCA_5.6.3_Assess Achievement of Objectives; JCA_5.6_Monitor; JCA_6.1_Information Transport; JCA_6.4.1_Secure Information Exchange
Modernization Areas:
Microelectronics
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*HEAT RESISTANT ALLOYS, X RAY DIFFRACTION, EXTRUSION, CARBON, CREEP, NIOBIUM, ZIRCONIUM ALLOYS, HARDNESS, METALLURGY, CARBON ALLOYS, HAFNIUM ALLOYS, VANADIUM ALLOYS, ELECTRONICS, ADDITIVES
Field(s)/Group(s):
Metallurgy and Metallography
Report Date:
1963 Apr 01