CORROSION OF MATERIALS IN HYDROSPACE. PART 2 - NICKEL AND NICKEL ALLOYS

reportActive / Technical Report | Accession Number: AD0821256 | Open PDF

Abstract:

A total of 635 specimens of 75 different nickel alloys were exposed at two different depths in the Pacific Ocean for periods of time varying from 123 to 1064 days to determine the effects of deep ocean environments on their corrosion resistance. Corrosion rates, types of corrosion, pit depths, effects of welding, stress corrosion cracking resistance, changes in mechanical properties and analyses of corrosion products of the alloys are presented. Of those alloys tested, the following were practically immune to corrosion nickel- chromium-iron alloy 718 nickel-iron-chromium alloys, except 902 nickel- chromium-molybdenum alloys nickel-cobalt-chromium alloy nickel-chromium-iron- molybdenum alloys nickel-chromium-cobalt alloy and nickel-molybdenum-chromium alloy. Alloys attacked by uniform or general corrosion were the cast nickel- copper alloys nickel-molybdenum-iron alloy and nickel-molybdenum alloy. Alloys attacked by crevice or pitting corrosion were the nickels wrought nickel-copper alloys nickel-chromium-iron alloys except 718 nickel-iron-chromium alloys 902 nickel-tin-zinc alloy nickel-beryllium alloy nickel-chromium alloys and nickel-silicon alloy. Corrosion resistance of welds in the nickel alloys, depends upon the selection of the proper welding electrodes. The nickel alloys were not susceptible to stress corrosion cracking. Corrosion products consisted of oxides, hydroxides, chlorides and oxychlorides. Mechanical properties of the alloys were not adversely affected in a significant way.

Author(s):
Reinhart, Fred M.
Author Organization(s):
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA
Descriptive Note:
Technical note,
Supplementary Note:
See also Part 3, AD821257.
Pagination:
0069

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NCEL-TN-915
Project Number(s):
Y-F015-01-05-002A
Monitor Series:
NCEL
 Subject Terms
Joint Capability Areas:
JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_8.2_Shape; JCA_8_Building Partnerships; JCA_4.6_Engineering; JCA_8.2.4_Leverage Capacities and Capabilities of Security Establishments; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5_Command and Control
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*CORROSION, *NICKEL, *NICKEL ALLOYS, TEMPERATURE, EXPERIMENTAL DATA, TENSILE PROPERTIES, COPPER ALLOYS, WELDS, OXYGEN, CRACK PROPAGATION, CORROSION RESISTANCE, TABLES(DATA), ENVIRONMENTAL TESTS, IRON ALLOYS, STRESS CORROSION, SALINITY, SEA WATER, ELONGATION, PH FACTOR, SILICON ALLOYS, COBALT ALLOYS, CHROMIUM ALLOYS, DEEP SUBMERGENCE
Field(s)/Group(s):
Properties of Metals and Alloys
Keyword(s):
NICKEL ALLOY 200
Report Date:
1967 Aug 01