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Jominy end-quenched hardenability and microstructure distribution for AISI 1060 steel [2]: M, martensite; B, bainite; F, ferrite; P, pearlite.
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In this paper we discuss the standard Jominy curve method, which is used for hardness and microstructure prediction at the core of steel parts of different shapes. It is shown that the simplified method of calculation needs verification by an exact analytical solution of the problem connected with the Jominy end-quench method. For this purpose, an...
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Context 1
... 1, between units 4 and 5 there will be a hardness of 28 HRC and a percentage of martensite of 20 %. This means that the gear should be quenched intensively in order to provide a hardness of 28 HRC and 20 % martensite. Similarly, one can predict the hardness and microstructure at the core of a bearing ring made of AISI 1060 steel (see Table 7 and Fig. 2). When intensive quenching in water is applied, the cooling rate at the core of the bearing ring is This means that the bearing ring will be quenched through, having almost 100 % martensite through all cross sections. One can predict also the hardness and microstructure at the core of a shaft made of AISI 4140 steel (see Table 7 and ...
