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Prediction of the processing window and austemperability for austempered ductile ironZahiri, Saden H. (Saden Heshmatollah), 1966- January 2002 (has links)
Abstract not available
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The precipitation hardening response in A1-Mg(-Ag) alloysKubota, Masahiro, 1967- January 2001 (has links)
Abstract not available
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Microstructural study and modeling of metastable phases and their effect on strenghthening [sic] in Al-Mg-Cu-Si alloying systemKovarik, Libor, January 2006 (has links)
Thesis (Ph. D.)--Ohio State University, 2006. / Title from first page of PDF file. Includes bibliographical references (p. 220-225).
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Understanding the Effect of Isothermal Heat Treatments on Microstructure of LMD-w Titanium Alloy (Ti-6242) - As-Built microstructure / Förstå effekten av Isotermiska värmebehandlingar på mikrostrukturen av LMD-w byggt Ti-6242Harish, Prakruth January 2020 (has links)
The most widely used titanium alloy in the hot sections of a jet engine is Ti-6Al-2Sn-4Zr-2Mo (Ti-6242) and with the technological advancements additive manufacturing (AM) of Ti-6242 is of great interest. Although, there is not much published related to additively manufactured Ti-6242. The project aimed to provide an experimental input for simulations of additively manufactured,laser metal deposited–wire (LMD-w) of Ti-6242. The main part of this project has been to experimentally study the effect of isothermal temperatures and holding times on the microstructural changes in as-built Ti-6242 on Ti-64 base-plate. The evaluation of micro-structural changes with isothermal temperature, holding time and cooling rates on Ti-6242 are quantified in terms of alpha laths, phase fraction by using MIPAR (image analysis software) and preliminary determine mechanical properties by performing hardness tests.The microstructures obtained through a process are highly dependent on the thermal history is it exposed to and the mechanical properties are determined by the microstructures present. In this thesis work the alpha lath thickness and the hardness of the material increases with increasing isothermal temperature. From the phase fractions obtained forthe heat treated samples an equilibrium phase diagram and a TTT diagram is plotted for as-built microstructure.
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