DEVELOPMENT OF NANOSTRUCTURED BAINITIC STEEL BY UTILIZING THE TWO STEPS AUSTEMPERING HEAT TTREATMENT

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FOUGHANI MILAD; Kolahi Alireza; ALIZADEH MEHDI; PALIZDAR YAHYA

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Journal: JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES Year:2017 | Volume:5 | Issue:4 Page(s): 11-17

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Title

DEVELOPMENT OF NANOSTRUCTURED BAINITIC STEEL BY UTILIZING THE TWO STEPS AUSTEMPERING HEAT TTREATMENT

Author(s)

FOUGHANI MILAD | Kolahi Alireza | ALIZADEH MEHDI | PALIZDAR YAHYA | Issue Writer Certificate

Keywords

MEDIUM CARBON STEELSQ2

NANOSTRUCTURE BAINITEQ2

TWO STEPS AUSTEMPERINGQ2

MECHANICAL PROPERTIESQ2

Abstract

Special MECHANICAL PROPERTIES of nano structure bainitic steel such as high tensile strength, hardness, toughness and low manufacturing cost have attracted considerable attention in the past few years. However, the main problem for this type of steels to be industrialized, long austempering process period which increases production costs. In this research, in order to accelerate the bainitic transformation, carbon concentration was decreased and TWO STEPS AUSTEMPERING process was employed to prevent the bainite laths thickening. Specimens were austenetized at 1000oC for 15 min and were kept in the salt bath between 1-12 hours at temperatures in the range of 250-300oC in one step or two step bainite transformation. Standard metallography, XRD and scanning electron microscopy techniques were utilized for the microstructural characterization and the tensile and hardness test were employed for MECHANICAL PROPERTIES evaluation. The obtained results show that TWO STEPS AUSTEMPERING process and lower carbon concentration lead to lower austempering period as well as formation of more stable retained austenite which results in higher MECHANICAL PROPERTIES.

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APA: Copy

FOUGHANI, MILAD, Kolahi, Alireza, ALIZADEH, MEHDI, & PALIZDAR, YAHYA. (2017). DEVELOPMENT OF NANOSTRUCTURED BAINITIC STEEL BY UTILIZING THE TWO STEPS AUSTEMPERING HEAT TTREATMENT. JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES, 5(4 ), 11-17. SID. https://sid.ir/paper/252369/en

Vancouver: Copy

FOUGHANI MILAD, Kolahi Alireza, ALIZADEH MEHDI, PALIZDAR YAHYA. DEVELOPMENT OF NANOSTRUCTURED BAINITIC STEEL BY UTILIZING THE TWO STEPS AUSTEMPERING HEAT TTREATMENT. JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES[Internet]. 2017;5(4 ):11-17. Available from: https://sid.ir/paper/252369/en

IEEE: Copy

MILAD FOUGHANI, Alireza Kolahi, MEHDI ALIZADEH, and YAHYA PALIZDAR, “DEVELOPMENT OF NANOSTRUCTURED BAINITIC STEEL BY UTILIZING THE TWO STEPS AUSTEMPERING HEAT TTREATMENT,” JOURNAL OF ADVANCED MATERIALS AND TECHNOLOGIES, vol. 5, no. 4 , pp. 11–17, 2017, [Online]. Available: https://sid.ir/paper/252369/en

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