INVESTIGATION OF COOLING RATE ON CONTINUOUS COOLING TRANSFORMATION BEHAVIOR OF API X65 PIPELINE STEEL

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RAKHSHKHORSHID M.; HASHEMI S.H.

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Journal: Modares Mechanical Engineering Year:2013 | Volume:13 | Issue:8 Page(s): 57-67

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Title

INVESTIGATION OF COOLING RATE ON CONTINUOUS COOLING TRANSFORMATION BEHAVIOR OF API X65 PIPELINE STEEL

Author(s)

RAKHSHKHORSHID M. | HASHEMI S.H. | Issue Writer Certificate

Keywords

CONTINUOUS COOLING TRANSFORMATIONQ2

MICROALLOYED STEELQ2

ACICULAR FERRITEQ2

GAS TRANSPORTATION PIPELINEQ2

API X65Q2

Abstract

The transformation behavior and microstructural characteristics of API X65 pipeline steel were investigated by dilatometry and microstructural observation. Microhardness measurements were used to verify the observed microstructures. The test steel is imported from abroad and is used extensively in Iran natural gas transmission projects. The CONTINUOUS COOLING TRANSFORMATION curves of the test steel were constructed. The results showed that with increasing the cooling rate from 0.5 to 40oC/s, the microstructure changed from polygonal ferrite, quasi-polygonal ferrite-pearlite to ACICULAR FERRITE. The microstructure was dominated by ACICULAR FERRITE in cooling rates higher than 5oC/s. The results can be used to design the optimum thermo-mechanical control process (through the selection of proper cooling rate) in domestic manufacturing of the test steel.

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APA: Copy

RAKHSHKHORSHID, M., & HASHEMI, S.H.. (2013). INVESTIGATION OF COOLING RATE ON CONTINUOUS COOLING TRANSFORMATION BEHAVIOR OF API X65 PIPELINE STEEL. MODARES MECHANICAL ENGINEERING, 13(8), 57-67. SID. https://sid.ir/paper/178618/en

Vancouver: Copy

RAKHSHKHORSHID M., HASHEMI S.H.. INVESTIGATION OF COOLING RATE ON CONTINUOUS COOLING TRANSFORMATION BEHAVIOR OF API X65 PIPELINE STEEL. MODARES MECHANICAL ENGINEERING[Internet]. 2013;13(8):57-67. Available from: https://sid.ir/paper/178618/en

IEEE: Copy

M. RAKHSHKHORSHID, and S.H. HASHEMI, “INVESTIGATION OF COOLING RATE ON CONTINUOUS COOLING TRANSFORMATION BEHAVIOR OF API X65 PIPELINE STEEL,” MODARES MECHANICAL ENGINEERING, vol. 13, no. 8, pp. 57–67, 2013, [Online]. Available: https://sid.ir/paper/178618/en

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