Accession Number : ADA260341

Title :   Relating Porosity and Mechanical Properties in Spray Formed Alloy 625.

Descriptive Note : Research rept. Feb-Oct 92,

Corporate Author : NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SHIP MATERIALS ENGINE ERING DEPT

Personal Author(s) : Payne, R. D. ; Moran, A. L. ; Cammarata, R. C.

Report Date : 27 OCT 1992

Pagination or Media Count : 20

Abstract : Previous studies of spray formed material at the Carderock Division, Naval Surface Warfare Center, Annapolis Detachment, have indicated that porosity is one of the few component characteristics affected by changes in process parameters. As a result, porosity has often been directly linked to quality. In this paper, the relationship between porosity and mechanical properties is examined in an effort to prove that porosity does indeed indicate quality. In general, increases in porosity lead to decreases in strength and hardness. This allows the generalization that higher porosity levels indicate lower quality material.

Descriptors :   *METALLURGY, *INDUSTRIAL PRODUCTION, HARDNESS, MATERIALS, MECHANICAL PROPERTIES, POROSITY, SPRAYS, SURFACES, ALLOYS, QUALITY CONTROL.

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE