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依照非晶形成能力的三判据原则及非晶成分团簇线定律法则,选取在常规非晶合金制备过程中呈现较强非晶形成能力的Ni_(60)Zr_(20)Nb_(15)Al_5合金成分,研究其在不同激光功率条件下在45#钢表面得到的熔覆层的微观组织和力学及腐蚀性能.结果表明:熔覆涂层由熔覆层、结合区和热影响区组成,物相包括非晶相及Al_3Zr_5、Al_3Nb_(11)Ni_9、Al_2O_3等晶体相;当功率为3600W时,熔覆层表面硬度高,达到HK1796.4,涂层耐蚀性最好,致钝电流密度和维钝电流密度都达到最小,分别为3.0669 mA/cm~2和0.2556 mA/cm~2.
According to the three criteria of amorphous formation ability and the rule of cluster line law of amorphous component, Ni_ (60) Zr_ (20) Nb_ (15) Al_5 with strong amorphous formation ability during the preparation of conventional amorphous alloys The microstructure, mechanical properties and corrosion resistance of the cladding layer obtained on the surface of 45 # steel under different laser powers were studied.The results show that the cladding layer consists of cladding layer, bonding zone and heat affected zone, The phases include amorphous phase and crystal phases such as Al_3Zr_5, Al_3Nb_ (11) Ni_9 and Al_2O_3. When the power is 3600W, the surface hardness of the cladding layer is high, reaching HK1796.4, the corrosion resistance of the coating is the best and the ductile current density And the dimension of blunt current are the least, which are respectively 3.0669 mA / cm ~ 2 and 0.2556 mA / cm ~ 2.