Reference temperature determination for ASTM A517 and X80 grade steels

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Authors
  1. Hull, D.A.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Engineering Material Research, Downsview ONT (CAN)
Abstract
This report describes the determination of reference temperatures for two steel plates and one weld, using ASTM Test Method E1921-97 "Determination of Reference Temperature, To, for Ferritic Steels in the Transition Range" to generate transition master curves. Welded ASTM A517 steel is sued in the Canadian Navy's Halifax class frigates, and both plate and a submerged arc welded have been tested in different orientation and at both quasi-static and intermediate loading rates. Plate samples of X80 steel from two different manufacturers have also been investigated. X80 steel is a candidate for future use in the repair and construction of naval vessels. This work is being supplemented by experiments at the Dockyard Laboratory (Pacific) using a drop tower to achieve higher deformation rates. The test program has been successful in quantifying the fracture toughness over the temperature range of interest. The materials studied were vey tough, and had very low reference temperatures, suggesting a high resistance to brittle fracture.

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Keywords
350WT steel;Fracture transition;Master curve;Reference temperature;Ship plate
Report Number
DREA-CR-2001-177 — Contractor Report
Date of publication
01 Nov 2001
Number of Pages
85
DSTKIM No
CA020693
CANDIS No
517408
Format(s):
Hardcopy;Document Image stored on Optical Disk

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