STUDY THE MICROSTRUCTURE AND HARDNESS OF FSW OF API 70 STEEL AT THE PRESENCE OF TIO2 PARTICLES

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POURIAMANESHA RASOUL; DEHGHANI KAMRAN

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Journal of Advanced Processes in Materials Engineering Year:2018 | Volume:12 | Issue:3 (46) Page(s): 121-135

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Title

STUDY THE MICROSTRUCTURE AND HARDNESS OF FSW OF API 70 STEEL AT THE PRESENCE OF TIO2 PARTICLES

Author(s)

POURIAMANESHA RASOUL | DEHGHANI KAMRAN | Issue Writer Certificate

Keywords

FRICTION STIR WELDING (FSW)Q2

HSLA STEELQ1

TITANIUM DIOXIDE (TIO2)Q2

MICROSTRUCTUREQ2

HARDNESSQ2

Abstract

In this study, the microstructural properties and HARDNESS of Friction Stir Welded (FSWed) of high strength low alloy API X70 steel at the presence of titanium dioxide (TiO2) particles were investigated. In this regard, a homogeneous mixture of TiO2 and X70 steel powders were inserted into the weld groove before applying FSW. The FSW method was applied on HSLA X70 with and without addition of titanium oxide (TiO2) particles. The optical microscopy and Vickers microhardness measurements were employed to evaluate the MICROSTRUCTURE and HARDNESS of the different weldments zones. The results showed that the HARDNESS of various zones in the weldment are strongly depended on the MICROSTRUCTURE which is affected by heat input and stiring action. In addition, the TiO2 particles were homogenously dispersed in the stir zone of TiO2-doped weldment and subsequently has changed the MICROSTRUCTURE and HARDNESS. In particular, a transition from an acicular ferrite (AF) dominant MICROSTRUCTURE with a HARDNESS value of 300 HV to a polygonal ferrite (PF) dominant MICROSTRUCTURE with a HARDNESS value of 180 HV was observed by moving from top surface region to near root region.

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APA: Copy

POURIAMANESHA, RASOUL, & DEHGHANI, KAMRAN. (2018). STUDY THE MICROSTRUCTURE AND HARDNESS OF FSW OF API 70 STEEL AT THE PRESENCE OF TIO2 PARTICLES. ADVANCED PROCESSES IN MATERIALS, 12(3 (46) ), 121-135. SID. https://sid.ir/paper/172682/en

Vancouver: Copy

POURIAMANESHA RASOUL, DEHGHANI KAMRAN. STUDY THE MICROSTRUCTURE AND HARDNESS OF FSW OF API 70 STEEL AT THE PRESENCE OF TIO2 PARTICLES. ADVANCED PROCESSES IN MATERIALS[Internet]. 2018;12(3 (46) ):121-135. Available from: https://sid.ir/paper/172682/en

IEEE: Copy

RASOUL POURIAMANESHA, and KAMRAN DEHGHANI, “STUDY THE MICROSTRUCTURE AND HARDNESS OF FSW OF API 70 STEEL AT THE PRESENCE OF TIO2 PARTICLES,” ADVANCED PROCESSES IN MATERIALS, vol. 12, no. 3 (46) , pp. 121–135, 2018, [Online]. Available: https://sid.ir/paper/172682/en

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