期刊
METALS AND MATERIALS INTERNATIONAL
卷 24, 期 3, 页码 644-651出版社
KOREAN INST METALS MATERIALS
DOI: 10.1007/s12540-018-0065-z
关键词
TiC; Reinforcement; Steel matrix composite; Tempering; Hardness
资金
- Civil Military Technology Cooperation Center, the Agency for Defense Development (ADD), Republic of Korea [14-CM-MP-03]
- Agency for Defense Development (ADD), Republic of Korea (14-CM-MP-03).
TiC-reinforced SKD11 steel matrix composite, fabricated by a pressure infiltration casting, undergoes monotonic decrease in hardness as tempering temperature increases. Element mappings by TEM-EDS and thermodynamic calculation indicate that remarkable redistribution of V between the reinforcement and the steel matrix occurs by partial dissolution and re-precipitation of MC carbides upon casting process. The absence of secondary hardening is led by the enrichment of V in the reinforcement that reduces the V content in the steel matrix; this reduction in V content makes the precipitation of fine VC sluggish during the tempering.
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