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Einfluss der Abschrecktemperatur auf die Gefügestruktur und Leistungsfähigkeit von mit Aluminium geimpften Bor‐Guss‐Stählen
Author(s) -
Hou J.,
Fu H.,
Lei Y.,
Yi D.,
Xing J.
Publication year - 2010
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201000567
Subject(s) - rockwell scale , materials science , microstructure , quenching (fluorescence) , pearlite , boride , metallurgy , martensite , ferrite (magnet) , boron , optical microscope , scanning electron microscope , vickers hardness test , composite material , austenite , chemistry , physics , organic chemistry , quantum mechanics , fluorescence
The effects of quenching temperature on microstructure and performance of Al‐bearing cast boron steel (ACBS) containing 0.25–0.45%C, 1.5–1.8%B and 1.4–1.6%Al were investigated by means of the optical microscopy (OM), the scanning electron microscopy (SEM), X‐ray diffraction (XRD), Rockwell hardness and Vickers micro‐hardness tester. The results show that the solidification structures of cast steel consist of high hardness boride, ferrite, pearlite and a small quantity of martensite when 1.5–1.8%B and 1.4–1.6%Al are added into the carbon steel. The metallic matrix of ACBS changes into single martensite from the mixed structure of ferrite, pearlite and martensite along with the increase of quenching temperature. The increase of quenching temperature also leads to the transformation of boride from continuous shape to isolated shape. Moreover, the micro‐hardness of matrix and macroscopical hardness increase with the increase of quenching temperature. When the quenching temperature excels 1000°C, the hardness has a slight decrease. ACBS has good comprehensive properties after heat treatment at 1000°C.