Comparison of Impact Properties for Carbon and Low Alloy Steels
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2011年第10期
论文作者：O.H.Ibrahim
文章页码：931 - 936
摘 要：The impact properties of hot rolled carbon steel（used for the manufacture of reinforcement steel bars） and the quenched & tempered（Q&T） low alloy steel（used in the pressure vessel industry） were determined.The microstructure of the hot rolled carbon steel contained ferrite/pearlite phases,while that of the quenched and tempered low alloy steel contained bainite structure.Impact properties were determined for both steels by instrumented impact testing at temperatures between-150 and 200 C.The impact properties comprised total impact energy,ductile to brittle transition temperature,crack initiation and propagation energy,brittleness transition temperature and cleavage fracture stress.The Q&T low alloy steel displayed much higher resistance to ductile fracture at high test temperatures,while its resistance to brittle fracture at low test temperatures was a little higher than that of the hot rolled carbon steel.The results were discussed in relation to the difference in the chemical composition and microstructure for the two steels.
O.H.Ibrahim
摘 要：The impact properties of hot rolled carbon steel（used for the manufacture of reinforcement steel bars） and the quenched & tempered（Q&T） low alloy steel（used in the pressure vessel industry） were determined.The microstructure of the hot rolled carbon steel contained ferrite/pearlite phases,while that of the quenched and tempered low alloy steel contained bainite structure.Impact properties were determined for both steels by instrumented impact testing at temperatures between-150 and 200 C.The impact properties comprised total impact energy,ductile to brittle transition temperature,crack initiation and propagation energy,brittleness transition temperature and cleavage fracture stress.The Q&T low alloy steel displayed much higher resistance to ductile fracture at high test temperatures,while its resistance to brittle fracture at low test temperatures was a little higher than that of the hot rolled carbon steel.The results were discussed in relation to the difference in the chemical composition and microstructure for the two steels.
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