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Portable Hardness Test Technology for Assessing Titanium Weld Quality
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From ATI Wah Chang
Portable hardness testing technology was developed in this project and was based on an oxygen equivalent (OE) database for CP titanium weld metals. The database was created by testing the properties of full penetration autogenous welds made from a number of heats and using different welding procedures. The OE relationship for Rockwell B hardness was used to calibrate the portable hardness test procedure. The portable hardness tester was based on using the ultrasonic contact impedance method. This study has shown that with careful attention to detail, portable hardness testing can be used to assess the quality of cast weld metal that has thin oxide typical of purple and blue color. Acceptance criteria depends on the intent of the welding application. Products & Services
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Topics of Interest
The Rockwell hardness test continues to be applied as a tool for assessing the properties of a product while the tolerances on the acceptable material hardness have become tighter and tighter.
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Why portable hardness testing? Portable hardness testers have come of age since the late 90's, with a vast offering of high tech, digital instrumentation. Small, compact and menu driven, these...
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Material property analysis and hardness measurement provide a broad spectrum of data to a wide variety of markets. Traditionally hardness has been defined as the resistance of a material to permanent...
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5.1 Introduction
Tests known as "hardness tests" measure the average contact pressure of materials when an indenter (conical, pyramidal or spherical) is pressed into a flat surface. After the...
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The Rockwell test method is defined in ASTM E-18 and is the most commonly used hardness tester operation method since it is generally easier to perform and more accurate than other types of hardness...
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