2020
DOI: 10.1007/s11665-020-05164-3
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Influence of Tempering in Different Melting Routes on Toughness Behavior of AISI 4340 Steel

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Cited by 11 publications
(4 citation statements)
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“…Hardness gradually decreased with increasing tempering temperature, as also verified by Kashefi et al [4], who affirmed that tempering temperature is significant in hardness reduction due to softening of martensitic matrix by carbon rejection. Manokaran et al [10] reported hardness values similar to that observed in the present research considering different tempering temperature for AISI 4340. In this way, higher tempering temperatures provide sufficient mobility for the substitutional alloying elements to cause cementite growth, resulting in a continuous decrease in strength during tempering [11].…”
Section: Resultssupporting
confidence: 89%
“…Hardness gradually decreased with increasing tempering temperature, as also verified by Kashefi et al [4], who affirmed that tempering temperature is significant in hardness reduction due to softening of martensitic matrix by carbon rejection. Manokaran et al [10] reported hardness values similar to that observed in the present research considering different tempering temperature for AISI 4340. In this way, higher tempering temperatures provide sufficient mobility for the substitutional alloying elements to cause cementite growth, resulting in a continuous decrease in strength during tempering [11].…”
Section: Resultssupporting
confidence: 89%
“…Extensive investigations have been devoted to exploring the influence of various heat treatment protocols, specifically austenitizing temperature, tempering temperature, and cryogenic treatment, on the metallurgical structure and mechanical properties of 40CrNi2MoE steel. Manokaran [ 3 ] has studied the influence of different melting routes (vacuum degassing, electro-slag remelting, and vacuum arc remelting) on toughness behavior, which suggests that the homogeneously distributed fragmented carbides in ESR may cause its lesser embrittlement.…”
Section: Introductionmentioning
confidence: 99%
“…The key disadvantage of UHSS with transition carbides is relatively low values of the Charpy V-notch (CVN) impact energy [1,7]. Sufficient ductility and fracture toughness is attained in these steels by vacuum arc remelting, the use of modified heat treatment routes, and/or alloying the steels with ≥1.5 wt.%Si [1,[7][8][9][10][11]. Additions of Si ≥ 1.5 wt.% reduce significantly the precipitation of cementite which enhances the strength and toughness of UHSS [1,4,10,[12][13][14][15][16].…”
Section: Introductionmentioning
confidence: 99%