摘要： The application of thin film metallic glass (TFMG) has been shown to improve the fatigue characteristics of ZK60 magnesium alloys. This paper reports on the deposition of Zr51Cu32Al10Ni7 (Z-TFMG) and W70Ni20B10 (W-TFMG) on ZK60 Mg alloy to a thickness of 200nm and its effect on fatigue characteristics. In four-point-bending fatigue studies at room temperature, the fatigue limits of the bare, W-, and Z-TFMG-coated Mg alloys were 225, 270, and 280MPa, respectively. These values indicate that the TFMG coatings improved fatigue resistance by as much as 24% through 107cycles. The hardness of TFMGs, their excellent adhesion to the substrate, and the resulting reduction in surface roughness are believed to account for the enhanced fatigue characteristics. •Thin film metallic glass (TFMG) is shown to improve the fatigue characteristics of ZK60 Mg alloy.•Fatigue life of alloy is extended by >250 times when coated with TFMG.•TFMG coatings improved fatigue resistance by as much as 24%.•The improvement is attributed to a smooth film with good adhesion to the substrate.•Benefits of coatings are more evident under low and medium levels of applied stresses. 出版者： Elsevier B.V 出版日期： 2016-10-01 出處： Thin solid films, 2016-10, Vol.616, p.431-436 版權： 2016 Elsevier B.V. 識別號： ISSN: 0040-6090 識別號： DOI: 10.1016/j.tsf.2016.09.010
