LOW-TEMPERATURE MECHANICAL PROPERTIES AND FRACTURE TOUGHNESS OF TI-6AL-6V-2SN.

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Abstract:

The mechanical properties of Ti-6Al-6V-2Sn have been evaluated in the temperature range from 200 to -269C. A commercial and an extra-low interstitial ELI grade of the alloy were studied in both the as-received and heattreated conditions. The ELI grade was heat treated to two different microstructures each havine a yield strength level from 170 to 180 ksi. The data show that fatigue cracks severely reduced the notch strength and resulted in lower K sub Ic values than when sharply machinenotched. The material treated at the higher solution temperature exhibited higher K sub Ic values than that heat treated at the lower solution temperature, despite the higher alpha-beta ratio of the latter condition. Author

Author(s):
Desisto, Thomas S. ; Hickey, Charles F., Jr.
Author Organization(s):
ARMY MATERIALS RESEARCH AGENCY WATERTOWN MASS
Descriptive Note:
Technical rept.,
Supplementary Note:
Presented at the Annual Meeting of American Society for Testing and Materials at Purdue Univ., Lafayette, Ind., 17 Jun 65.
Annotation:
Low-temperature mechanical properties and fracture toughness of Ti-6Al-6V-2Sn.
Pagination:
0018

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AMRA-TR-65-17
Project Number(s):
DA 1C024401A110
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*FRACTURE(MECHANICS), *TOUGHNESS, CRYOGENICS, TITANIUM ALLOYS, TITANIUM ALLOYS, ALUMINUM ALLOYS, VANADIUM ALLOYS, TIN ALLOYS, HEAT TREATMENT, TENSILE PROPERTIES, SHOCK RESISTANCE, MICROSTRUCTURE, MECHANICAL PROPERTIES
Keyword(s):
FRACTURE(MECHANICS), TITANIUM ALLOY 6AL 2SN 6V
Report Date:
1965 Jul 01