Essays about: "prior austenite grains"
Found 3 essays containing the words prior austenite grains.
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1. Austenite grain growth in bearing steels : An investigation on steel grades 100Cr6 and 100 CRMnMoSi8-4-6
University essay from KTH/MaterialvetenskapAbstract : An investigation of austenite grain growth of two bearing steel grades; 100Cr6 and100CrMnMoSi8-4-6 is performed. Austenitization treatments were performed between 860°C and 1200 °C for 5 minutes to 5 hours and the grain size was determined for each sample.Grain boundary etching was carried out using a water based, picric-acid etchant. READ MORE
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2. Development of a heat treatment method to form a duplex microstructure of lower bainite and martensite in AISI 4140 stee
University essay from KTH/MaterialvetenskapAbstract : Research on bainite and martensite structures has indicated that lower bainite needles have a refining effect on the lath martensitic structure. Lower bainte needles partitions prior austenite grains and will consequently have a refining effect on the subsequent formed lath martensite. READ MORE
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3. The effect of prior austenite grain size on the machinability of a pre-hardened mold steel. : Measurement of average grain size using experimental methods and empirical models.
University essay from Avdelningen för maskin- och materialteknikAbstract : The use of pre-hardened mold steels has increased appreciably over the years; more than 80% of the plastic mold steels are used in pre-hardened condition. These steels are delivered to the customer in finished state i.e. there is no need of any post treatment. READ MORE