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Experiment 5: Heat Treatment - Quenching & Tempering

Submitted by Henry Tan on
Materials of Engineering Laboratory

Conventional heat treatment procedures for producing martensitic steels generally involve continuous and rapid cooling of an austenitized specimen in some type of quenching medium, such as water, oil, or air. The properties of a steel that has been quenched and then tempered depends largely on the rate of cooling and tempering times and temperatures. During the quenching heat treatment, the specimen can be converted to a variety of microstructures including soft and ductile spheroidite to hard and brittle martensite. The production of pearlitic and bainitic steels is lower in cost and suffices for most applications. Martensitic steels must be tempered prior to use due to their extreme brittleness. A range of heat treatments producing a variety of microstructures and mechanical properties will be investigated in this experiment beginning with a set of initially equivalent samples of SAE 1040 steel. Pearlite, Bainite and Martensite will all be produced through variations in the cooling rates of initially austenized samples.

Combined atomistic and continuum simulation

Submitted by Henry Tan on
computational mechanics
multiscale mechanics
atomistic simulations
Simulations in Materials

H. Tan, 2003
Chapter 12, Combined atomistic and continuum simulation for fracture and corrosion

Comprehensive Structural Integrity (http://www.sciencedirect.com/science/referenceworks/0080437494)
Volume 8: Interfacial and Nanoscale Failure

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