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| Study on the Microstructure, Chemical Gradient and Machinablity of High-strength Alloy Boron Cast Iron |
| AN Qing-Long, NIU Qiu-Lin, MING Wei-Wei, CHEN Ming |
| (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract Alloy boron cast iron has high property of hardness, high strength, abrasion resistance and heat resistance, which is often used in cylinder liner of highspeed locomotive diesel. The microstructure and chemical composition of the alloy boron cast iron were discussed. The machinability evaluation was carried out by turning tests. The result indicates that the alloy boron cast iron as one kind of Atype graphite cast iron has excellent mechanical property. Sialon ceramic tool shows much better performance compared with uncoated and TiAlN coated P20 carbide tool during high speed cutting of alloy boron cast iron.
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Received: 15 June 2011
Published: 30 July 2012
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