Influence of heat treatment on the machinability and corrosion behavior of AZ91 Mg alloy

查看全文 作　　者：Swetha Chowdary [1]V;Ravikumar [2]Dumpala;Anand Kumar [3]S;Kondaiah [4]VV;Ratna Sunil [1]B

机构地区：[1]Department of Mechanical Engineering,Rajiv Gandhi University of Knowledge Technologies(AP-IIIT),Nuzvid,521202,India;[2]Department of Mechanical Engineering,Visvesvaraya National Institute of Technology,Nagpur,Maharashtra 440010,India;[3]Department of Mechanical Engineering,Dayananda Sagar University,Bengaluru,560068,India;[4]Department of Mechanical Engineering,Tirumala Engineering College,Narasaraopet,Andhra Pradesh 522601,India

出　　处：《Journal of Magnesium and Alloys》索引2018年第6卷第1期,共7页

摘　　要：In the present study,AZ91 Mg alloy was heat treated at 410℃ for 6,12 and 24 h to investigate the influence of heat treatment on machinability and corrosion behavior.The effect of soaking time on the amount and distribution of Mg 17 Al 12(β-phase)was analyzed under the optical microscope.Microhardness measurements demonstrated the increased hardness with increased heat treatment soaking time,which can be attributed to the solid solution strengthening.The influence of super saturatedα-grains on reducing the cutting force(F z)with respect to increased cutting speed was observed as prominent.The corrosion behavior of the heat treated specimens was studied by conducting electrochemical tests.Surprisingly,corrosion rate of heat treated samples was observed as increased compared with the base material.From the results,it is evident that the machinability of AZ91 Mg alloy can be improved by producing super saturatedα-grains through heat treatment but at the cost of losing corrosion resistance. 关键词：AZ91 Mg alloy Solid solution TURNING Corrosion MACHINABILITY

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Influence of heat treatment on the machinability and corrosion behavior of AZ91 Mg alloy

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