DataVXJournal of Laser ApplicationsPaper
journal article·2015-02-01Open access

Evaluation of microstructure and fatigue properties in laser cladding repair of ultrahigh strength AerMet® 100 steel

Shi Da Sun, Martin Leary, Qianchu Liu, Milan Brandt

Journal of Laser Applications· Volume 27· Issue S2
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Source abstract

Abstract

The metallurgy and fatigue properties were evaluated for the laser cladding of AerMet® 100 powder on AerMet® 100 substrate. Working with small scale tensile and fatigue samples causes an overextended HAZ due to the constant heating applied on a small thermal mass. The limited heat input causes major processing issues with inter-run porosity observed. The microstructure observed in both the clad and Heat-affected Zone (HAZ) is (1) inhomogeneous and nonuniform and (2) hard and brittle martensitic structure. As a result, the yield strength is reduced by 37%, ultimate tensile strength (UTS) reduced by 13%, elongation reduced by 57%, and the fatigue life is reduced significantly.
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Research context

Metals & alloys

OpenAlex topics: Additive Manufacturing Materials and Processes · High Entropy Alloys Studies · Titanium Alloys Microstructure and Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

RMIT University RMIT Centre for Additive Manufacturing (RCAM), , Carlton, Victoria 3053, Australia and , Hawthorn, Victoria 3122, Australia

Defence Material Technology Centre (DMTC) RMIT Centre for Additive Manufacturing (RCAM), , Carlton, Victoria 3053, Australia and , Hawthorn, Victoria 3122, Australia

Defence Science and Technology Organisation (DSTO) Air Vehicles Division, , Fishermens Bend, Victoria 3207, Australia and , Hawthorn, Victoria 3122, Australia

Defence Material Technology Centre (DMTC) Air Vehicles Division, , Fishermens Bend, Victoria 3207, Australia and , Hawthorn, Victoria 3122, Australia

References (11)

Show source-provided references
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