EVALUATION OF CAVITATION EROSION BEHAVIOR OF A LASER SURFACE MELTED EXPERIMENTAL NICKEL ALUMINUM BRONZE

PDF

Authors
  1. KarisAllen, K.J.
  2. Taweel, C.A.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Facts Engineering Inc, Halifax NS (CAN)
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.
Keywords
Cavitation erosion;Alloying;Laser surface melting
Report Number
DREA-CR-97-419 — Contractor Report (Final)
Date of publication
01 May 1997
Number of Pages
75
DSTKIM No
97-03788
CANDIS No
503809
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: