Accession Number : ADA305154

Title :   Fatigue Initiation Study of Investment CAST Ti-6A1-4V Alloy,

Corporate Author : NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD

Personal Author(s) : Hurd, D. S. ; Lee, E. W.

PDF Url : ADA305154

Report Date : NOV 1995

Pagination or Media Count : 18

Abstract : Investment cast Titanium and Aluminum Alloys save Material/labor/time/cost compared to Wrought Material; Navy Goal -- Improved Quality Investment - Cast Ti-6A1-4V parts for the V-22 program; Fatigue-Critical Airframe Parts: Fatigue initiation dominates lifetime; Problem Areas of Castings: Residual porosity, inclusions, and effective grain size; Fatigue Initiation; Microstructure; Defect data required to optimize casting and HIPing parameters.

Descriptors :   *TITANIUM ALLOYS, *INVESTMENT CASTING, MICROSTRUCTURE, ALUMINUM ALLOYS, GRAIN SIZE, POROSITY, INCLUSIONS, COSTS, FATIGUE(MECHANICS).

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE