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Ultrasonic method of non-destructive test in metals effects of grain size on ultrasound wave at various frequencies /Chan, Tony T. T. January 2006 (has links) (PDF)
Thesis (M.Sc.)--City University of Hong Kong, 2006. / "Master of Science in Materials Engineering & Nanotechnology dissertation." Title from title screen (viewed on Nov. 21, 2006) Includes bibliographical references.
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Microstructural characterization of laser formed high-strength-low-alloy (HSLA) steelKgomari, Lerato Criscelda. January 2010 (has links)
Thesis (MTech. : Engineering Metallurgy.)--Tshwane University of Technology, 2010. / Establish a qualitative and quantitative comparison between the parameters of the laser used in manufacturing a 120 mm curvature in HSLA steel parts and the micro-structural changes in the steel part. Subsequently, the final microstructure will be used to determine the reason for the poor fatigue performance of the HSLA steel after laser forming.
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