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(Solved): 4. What is the purpose of a spheroidising heat treatment? On what classes of steel alloys is it no ...
4. What is the purpose of a spheroidising heat treatment? On what classes of steel alloys is it normally used?
5. Recommend a heat treatment for a 1050 steel, including appropriate temperatures, to produce a Brinell hardness of at least 330 and an elongation of at least \( 15 \% \). Determine the yield strength and tensile strength that are obtained by this heat treatment. 6. Predict the phases formed when a bar of 1080 steel is quenched from slightly above the eutectoid temperature under the following conditions: a) Oil (without agitation) b) \( 50^{\circ} \mathrm{C} / \mathrm{s} \)
Expert Answer
ANSWER: (4) Spheroidizing is a form of heat treatment for iron-based alloys, commonly carbon steels, in order to convert them into ductile and machinable alloys. Spheroidizing refers to a heat treatment material modification process that is used to c