LASTER SURFACE CLADDING BY Co  BASE ALLOY WITH Ce ON 20 #  STEEL PERFORMANCE AND MICROSTURCTURE STUDYS

Abstract

Abstract: Onthebase of 20 # steel, Co base alloy with Ce and without Ce was obtained with laser heatingtechnology. Theresultshowsthat Cehasobviouslyeffecton alloy microstructureespe ciallyimprovethecorrosion resistancein acid by31 % ,oxygenation resistanceby23 % ,in al kalescent liquid by 23 % . Improve fearlessness 30% and improve hardness by 168 HV.Throughcontrast and analysison the Co base microstructure with Ce and without Ce . The paper discussthetheory of Ce modification Co base alloy from theside of cooling thermody namicsand dynamics

Key words: rareearth, lasersurfacecladding, Co basealloy, corrosion resistance

L.J.Shang1 2) , Y.Wang2) , Q.K.Cai1)and C.S.Liu1) 1) Northeastern University ,Shenyang 110006 , China 2) Shenyang University ,Shenyang 110044 ,China. LASTER SURFACE CLADDING BY Co BASE ALLOY WITH Ce ON 20 # STEEL PERFORMANCE AND MICROSTURCTURE STUDYS[J]. Acta Metallurgica Sinica (English Letters), 1999, 12(4): 689-693.

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LASTER SURFACE CLADDING BY Co BASE ALLOY WITH Ce ON 20 # STEEL PERFORMANCE AND MICROSTURCTURE STUDYS

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