表面技术2013，Vol.42Issue(1)：9-13,5.
退火对激光熔覆FeCoCrNiB高熵合金涂层组织结构与硬度的影响
Effects of Annealing on the Microstructure and Hardness of Laser Cladding FeCoCrNiB High-entropy Alloy Coating
摘要
Abstract
FeCoCrNiB high-entropy alloy coating was prepared on the Q235 steel substrate. The coating is free of crack and pore defect, which is composed of rod-like M3 B phase and fee matrix phase. Formation mechanism of the phases was analyzed. Effects of high temperature annealing on microstructure and microhardness were investigated. The results show; after annealed at 900℃ and 1000℃, some granular and short rod-like M3B phase are precipitated in coating; After annealed at 1150 ℃ , rod-like, granular and short rod-like structure disappear, a blocky M3B phase formes, the microhardness of blocly phase is 1188HV; The coating exhibits excellent resistance to high temperature softening, the decrease of microhardness is only about 7% and 9% after annealed at 900 ℃ and 1000 ℃ .关键词
高熵合金/涂层/激光熔覆/高温退火Key words
high-entropy alloy/ coating/ laser cladding/ high temperature annealing分类
矿业与冶金引用本文复制引用
黄祖凤,张冲,唐群华,戴品强,吴波..退火对激光熔覆FeCoCrNiB高熵合金涂层组织结构与硬度的影响[J].表面技术,2013,42(1):9-13,5.基金项目
国家自然科学基金资助项目(51171046,50971043) （51171046,50971043）
福建省自然科学基金资助项目(2012J01202) （2012J01202）
福建省高校产学合作重大项目(2010H60001) （2010H60001）
