Thesis (Ph. D.)--University of Wisconsin--Madison, 1959. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 213-219).

Thesis (Ph. D.)--University of Texas at Austin, 1999. / Vita. Includes bibliographical references (leaves 263-274). Available also in a digital version from Dissertation Abstracts.

Thesis (M.App.Sc.) - Carleton University, 2007. / Includes bibliographical references (p. 101-105). Also available in electronic format on the Internet.

Thesis (Ph. D.)--Lehigh University, 1996. / Includes vita. Bibliography: leaves 215-219.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 52-54). Also available via the Internet.

Thesis (Ph. D.)--University of Alberta, 2010. / Title from pdf file main screen (viewed on June 11, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Structural Engineering, Department of Civil & Environmental Engineering, University of Alberta. Includes bibliographical references.

Thesis (M.S.) -- Univeristy of Tennesse. / At head of title: Metallurgy Division. "Date issued: Sep. 12, 1960." Bibliography: p. 83.

Thesis (MScIng)--University of Stellenbosch, 2005. / Bibliography. Also available via the Internet.

Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, 2002 / Phase transformations in steel are of profound commercial importance due to the fact that they influence the physical and mechanical properties of the end product. During the casting process, which occurs at temperatures in excess of 1500°C, the microstructure of the steel is austenitic. During slow cooling the austenite will decompose into lower temperature microstructures such as ferrite, pearlite or hard, brittle cementite, the latter becoming increasingly present the higher the carbon content of the steel. Steel manufacturers, however, make use of additional forming processes such as rolling, quenching and reheat or tempering to impart specific mechanical or metallurgical properties to a particular steel. If the cooling rate is increased, as would be the case during a quenching process, the austenite will decompose forming a needle like microstructure called bainite in addition to the other microstructures. A further increase in the cooling rate will result in the diffusionless transformation of part of the austenite to form martensite, a hard brittle microstructure. If heat was now to be applied to the steel, as in a tempering process, some of the martensite formed during the quenching process will again transform into a softer microstructure such as pearlite or ferrite.

The heat-transfer phenomena in the quenching process have been studied using stainless steel and mild steel specimens in brine (3% by wt. NaCl), water, oil and air, under controlled conditions. The experimental data were analysed using a simple mathematical model of the quenching process to study the relationship between the surface temperature of the specimen and the surface heat-transfer coefficient. The influence on this relationship, of important variables such as initial specimen temperature, quenchant temperature, surface oxidation, etc. has been studied. The results from the experimental data are in good agreement with the results of previous workers. The results obtained in this work, together with Jominy-test data and the mathematical model, were used to determine the necessary quenching conditions required to obtain a desired thermal history or mechanical property at a given position in a 4 inch diameter steel grinding-ball. A steel ball was then quenched under the above determined conditions and an examination of the ball section showed that the desired property was indeed present at the given location. / Applied Science, Faculty of / Materials Engineering, Department of / Graduate