Thesis (Ph. D.)--University of Wisconsin--Madison, 1957. / Typescript. Abstracted in Dissertation abstracts, v. 17 (1957) no. 4, p. 835. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 180-187).

Cheung, Hoi Cheung = Fe₈₁C₁₄Si₅旋節合金的變形 / 張凱翔. / "December 2010" / Thesis (M.Phil.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references. / Abstracts in English and Chinese. / Cheung, Hoi Cheung = Fe₈₁C₁₄Si₅ xuan jie he jin de bian xing / Zhang Kaixiang. / Abstract --- p.i / Acknowledgements --- p.iii / Chapter Chapter 1 --- Introduction / Chapter 1.1 --- Introduction --- p.1 / Chapter 1.2 --- Spinodal Decomposition --- p.1 / Chapter 1.3 --- Theory of Elasticity --- p.5 / Chapter 1.4 --- Deformation of Metals --- p.9 / Chapter 1.5 --- Fracture Mechanics --- p.10 / Chapter 1.6 --- Contact Mechanics --- p.12 / Chapter 1.7 --- Indentation Fracture --- p.16 / Chapter 1.8 --- Deformation and Failure of Tungsten Carbide --- p.20 / References --- p.22 / Figures --- p.25 / Chapter Chapter 2 --- Experiment / Chapter 2.1 --- Sample Preparation --- p.40 / Chapter 2.2 --- Indentation --- p.42 / Chapter 2.3 --- Analysis Method --- p.43 / References --- p.46 / Figures --- p.47 / Chapter Chapter 3 --- Result and Discussion / Chapter 3.1 --- Introduction --- p.50 / Chapter 3.2 --- Deformation on the Top Surfaces --- p.50 / Chapter 3.3 --- Deformation on the Side Surfaces --- p.52 / Chapter 3.4 --- A comparison with Tungsten Carbide (WC/Co) --- p.59 / Chapter 3.5 --- Discussion --- p.60 / Chapter 3.6 --- Conclusion --- p.63 / References --- p.64 / Figures --- p.67

Thesis (Ph. D.)--University of Texas at Austin, 1999. / Vita. Includes bibliographical references (leaves 166-172). Available also in a digital version from Dissertation Abstracts.

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The research work in this thesis involves an experimental and theoretical investigation for high speed machining of AISI 4140 medium carbon steels and AISI D2 tool steels which are classified as being difficult to machine materials. An experimental program was carried out to determine the cutting forces, chip formation, the secondary deformation zone thickness and surface roughness at different cutting speeds using a 0.4mm and 0.8mm nose radii ceramic tools and -7?? rake angle for annealed (virgin) AISI 4140 and heat treated AISI 4140 steel. Another series of experiments was carried out on the annealed (virgin) and heat treated AISI D2 with 0.4mm, 0.8mm and 1.2mm nose radii CBN (Cubic Boron Nitride) tools under various cutting conditions. A theoretical model is developed by taking into account the flow stress properties of the AISI 4140 (0.44% carbon content) to use with the Oxley Machining approach. To find the flow stress data for AISI D2 tool steel, the Johnson and Cook empirical constitutive equation is used as the constitutive model. In addition, the magnitude of tool radius should be also considered to determine the prediction of cutting performances. To account for the effect of nose radius edge in hard machining, a simplified geometrical method is used to model the parameters for application in the Oxley Model and works for the cutting conditions considered here. These extensions to the Oxley machining theory were verified by experimental results. These results show a good agreement between the Oxley machining theory and hard machining experiment at data. The research work described in this thesis provides useful data for hard machining conditions.

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