Accession Number : ADA329149

Title :   Evaluation of Cavitation Erosion Behavior of Laser Surface Melted Experimental Nickel Aluminum Bronze.

Descriptive Note : Contractor rept.,

Corporate Author : FACTS ENGINEERING INC HALIFAX (NOVA SCOTIA)

Personal Author(s) : KarisAllen, K.J. ; Taweel, C. A.

PDF Url : ADA329149

Report Date : MAY 1997

Pagination or Media Count : 71

Abstract : A series of laser surface melted experimental nickel aluminum bronze coupons have been evaluated for cavitation erosion resistance. Duplicate specimens of twenty five differing alloy compositions have been tested in accordance with ASTM G-32. For the materials tested, test results indicate that alloy chemistries with more than 10.7 wt percent Al produce the best resistance to cavitation erosion. The cavitation resistance of alloys with less than 10.7 percent Al can be improved through the addition of Cr. The analysis also indicates that the linear extrapolation method recommended in ASTM G-32 may produce non conservative incubation times for laser surface melted specimens with above average erosion performance.

Descriptors :   *EROSION RESISTANCE, LINEAR SYSTEMS, ALUMINUM ALLOYS, CANADA, LASERS, CORROSION RESISTANCE, CONCENTRATION(COMPOSITION), INCUBATION, NICKEL ALLOYS, SEA WATER CORROSION, CAVITATION CORROSION, EXTRAPOLATION, CHROMIUM ALLOYS, BRONZE.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE