摘要
利用液相烧结工艺成功制得以碳钢为基材,以TLMW50钢结硬质合金为耐磨覆层的复合材料。利用SEM、XRD等手段研究了1050℃淬火,150℃、200℃和250℃回火以及1100℃淬火,150℃、200℃和250℃回火6种不同热处理工艺对覆层材料的组织及微观形貌的影响。结果表明,上述6种热处理工艺均可以使钢结硬质合金TLMW50覆层中粘结相组织由珠光体转变为回火马氏体,硬质相结构会发生改变。其中1050℃淬火,150℃回火工艺较其它5种工艺优越,覆层粘结相中有Hgg碳化物形成,复式碳化物会演变为WC和FeWO4形式。
The composite with steel-bonded cemented hard alloy TLMW50 cladding and carbon steel substrate was fabricated by liquid sintering process successfully. The effects of the heat treatment with being quenched at 1050℃ or 1100℃ and tempered at 150℃, 200℃, 250℃ on microstructure and morphology of the composite were researched by SEM, XRD. The results show that this six heat treatment processes make the bonding phase of the steel-bonded cemented hard alloy TLMW50 cladding microstructure transitted from pearlite to tempered martensite. The process of quenching at 1050℃ and tempering at 150℃ is more beneficial to the cladding than other processes, and the hard phase variated into WC and FeWO4 and Hagg appeared in the binder.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2006年第3期62-64,共3页
Heat Treatment of Metals
基金
河南省重大科技攻关(0422020600)
