TY - JOUR
T1 - Improvement of strength and toughness of SKD11 type cold work tool steel
AU - Fukaura, Kenzo
AU - Sunada, Hisakichi
AU - Yokoyama, Yoshihiko
AU - Teramoto, Katsuyuki
AU - Yokoi, Daien
AU - Tsujii, Nobuhiro
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1998
Y1 - 1998
N2 - The strength and toughness of a newly developed 0.8C-8Cr cold work tool steel whose composition was controlled to suppress the precipitation of massive eutectic M7C3 carbides were investigated with reference to microstructure and were compared with conventional SKD11. The toughness was evaluated by the area under the stress-strain curve. The tensile strength of the newly developed steel (designated as Mod. SKD11) is about 400 MPa higher and the toughness is 1.8 times larger than that of SKD11 throughout a wide range of tempering temperatures. It is revealed from microstructure examination, the fracture surface observation and the estimation of the tensile stress required to generate cleavage crack within M7C3 carbide based on Stroh's theory that superior mechanical properties of Mod.SKD11 are attributed to the refinement and homogeneous distribution of M7C3 carbides that retards the crack generation and prevents the crack growth, respectively.
AB - The strength and toughness of a newly developed 0.8C-8Cr cold work tool steel whose composition was controlled to suppress the precipitation of massive eutectic M7C3 carbides were investigated with reference to microstructure and were compared with conventional SKD11. The toughness was evaluated by the area under the stress-strain curve. The tensile strength of the newly developed steel (designated as Mod. SKD11) is about 400 MPa higher and the toughness is 1.8 times larger than that of SKD11 throughout a wide range of tempering temperatures. It is revealed from microstructure examination, the fracture surface observation and the estimation of the tensile stress required to generate cleavage crack within M7C3 carbide based on Stroh's theory that superior mechanical properties of Mod.SKD11 are attributed to the refinement and homogeneous distribution of M7C3 carbides that retards the crack generation and prevents the crack growth, respectively.
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U2 - 10.2355/tetsutohagane1955.84.3_230
DO - 10.2355/tetsutohagane1955.84.3_230
M3 - Article
AN - SCOPUS:0032022425
VL - 84
SP - 230
EP - 235
JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
SN - 0021-1575
IS - 3
ER -