Accession Number:

ADA056091

Title:

Elastic-Plastic Fracture Toughness (J sub IC) of High-Strength Steels and Titanium Alloys.

Descriptive Note:

Research and development rept.,

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s):

• Gudas,John P.
• Joyce,James A.

Report Date:

1978-06-01

Pagination or Media Count:

37.0

Abstract:

The elastic-plastic fracture toughness parameter J sub IC has been determined for HY 80, HY 130, 10 Ni steel, 17-4PH steel, and titanium alloys Ti-6Al-2Cb-1Ta-0.8Mo, Ti-7Al-2Cb-1Ta, and Ti-6Al-4V. Tests were carried out at room temperature by use of a multiple-specimen test method and a newly developed single-specimen computer interactive test procedure. J sub I is shown to be an effective parameter in describing fracture toughness on the basis of both crack initiation and crack-growth resistance. The computer interactive test procedure is shown to produce equivalent results when compared with the multiple-specimen test method and possesses distinct advantages over that method. Author

Descriptors:

• *HIGH STRENGTH ALLOYS
• *STEEL
• *FRACTURE(MECHANICS)
• *TITANIUM ALLOYS
• COMPUTERIZED SIMULATION
• PARAMETERS
• ELASTIC PROPERTIES
• TOUGHNESS
• PLASTIC PROPERTIES

Subject Categories:

• Metallurgy and Metallography
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE