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The composite metastable(Ti0.5Al0.5)N,(Ti0.45Al0.45Cr0.1)N and(Ti0.35Al0.35Cr0.3)N coatings were respectively deposited on a wrought martensite steel 1Cr11Ni2W2MoV for aero-engine compressor blades by arc ion plating technique with pulse substrate bias. A