Precracked Charpy Impact Fracture Toughness Properties of Backup Flux-Welded Ti-5A1-2.5 Sn Alloy Plate from -320 Degrees to 550 Degrees Fahrenheit

reportActive / Technical Report | Accession Number: ADA471610 | Open PDF

Abstract:

A program was conducted to evaluate the effects of a proprietary backup flux-welding technique on the impact fracture toughness properties of Ti-5A1-2.5 Sn alloy plate. The flux was the product of Mitron Research and Development Corporation Precracked Charpy often called subsize Charpy specimens were tested under impact loads at -320 degrees F, -100 degrees room temperature, and 550 degrees F. The weld and heat affected zone HAZ bad greater fracture toughness resistance than the base metal. The fracture resistance, work per unit area WA decreased with decreasing test temperature. At -320 degrees F the weld and HAZ retained 13 of their fracture resistance at room temperature. However, the weld- and HAZ-converted WA impact fracture resistance at -320 degrees F had a Kc approximately equal 125 ksi square root of in. which indicated good toughness for this temperature. The fracture resistance did not appear to be a function of the specimens location through the thickness of the plate for a given specimen orientation. In general, the fracture resistance of the weld and HAZ compared to the base metal was excellent,

Author(s):
Davis, Sidney O. ; Niemi, Roger M.
Author Organization(s):
AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH
Descriptive Note:
Final rept. Feb-Jun 1964
Supplementary Note:
Prepared in collaborate with Monsanto Research Corporation, Dayton, OH. DOI: 10.21236/ADA471610
Pagination:
0028

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):
AFML-TR-65-304
Monitor Series:
AFSC/WPAFB
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*CRACKING(FRACTURING), *TOUGHNESS, *FRACTURE(MECHANICS), *ALLOYS, TEST AND EVALUATION, SQUARE ROOTS, IMPACT LOADS, BASE METAL, IMPACT STRENGTH, TEMPERATURE, ROOM TEMPERATURE, RESISTANCE
Field(s)/Group(s):
Properties of Metals and Alloys
Keyword(s):
I 5A1 2 5 SN ALLOY PLATE
Report Date:
1965 Jan 01
Creation Date:
2007 Sep 19