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Service Performance of Ni-Al Bronze in Marine Environments

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This paper will present two case studies of pre-mature failure of process equipment in seawater service which will illustrate the influence of metallurgical structure on the service performance of Nickel-Aluminum Bronze in marine environments.

Product Number: 51317--9298-SG
ISBN: 9298 2017 CP
Author: Moavin Islam
Publication Date: 2017
Industries: Maritime , Materials Selection and Design
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Influence of Metallurgical Structure on the Service Performance ofNi-Al Bronze Process Equipment in Marine EnvironmentsNickel-Aluminum Bronzes often referred to as NAB are a group of Cu-based alloys containing about 3-6% Ni 8-11% Al 3-5% Fe and 1-3% Mn. These alloys have excellent physical properties such as fatigue creep and wear as well as excellent resistance to different forms of corrosion such as general corrosion cavitation erosion and de-alloying. Hence they find widespread use in marine environments as components of ships and industrial process equipment handling seawater. However the corrosion resistance of these alloys can be adversely effected by their metallurgical structure which in turn depends uponhe exact composition of the material and their manufacturing history - especially the thermal treatment to which they have been subjected.This paper will present two case studies of pre-mature failure of process equipment in seawater service which will illustrate the influence of metallurgical structure on the service performance of NAB in marine environments.Key words: Ni-Al-Bronze metallurgical structure marine environments.

Key words: Ni-Al-Bronze, metallurgical structure, marine environments

Influence of Metallurgical Structure on the Service Performance ofNi-Al Bronze Process Equipment in Marine EnvironmentsNickel-Aluminum Bronzes often referred to as NAB are a group of Cu-based alloys containing about 3-6% Ni 8-11% Al 3-5% Fe and 1-3% Mn. These alloys have excellent physical properties such as fatigue creep and wear as well as excellent resistance to different forms of corrosion such as general corrosion cavitation erosion and de-alloying. Hence they find widespread use in marine environments as components of ships and industrial process equipment handling seawater. However the corrosion resistance of these alloys can be adversely effected by their metallurgical structure which in turn depends uponhe exact composition of the material and their manufacturing history - especially the thermal treatment to which they have been subjected.This paper will present two case studies of pre-mature failure of process equipment in seawater service which will illustrate the influence of metallurgical structure on the service performance of NAB in marine environments.Key words: Ni-Al-Bronze metallurgical structure marine environments.

Key words: Ni-Al-Bronze, metallurgical structure, marine environments

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