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Mechanical behavior and microstructure evolution of a quenched and partitioned steel during drop weight impact and punch testing

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Abstract
In this work, a Fe-0.25C-3.0Mn-1.5Si-0.023Al-0.015Cr (wt%) steel was subjected to the quenching and partitioning (Q&P) treatment, and its mechanical behavior and microstructure evolution during drop weight impact testing and quasi-static punch testing were thoroughly analyzed. It is shown that the 1 mm thick Q&P steel sheet can withstand 110 J impact energy without any (micro) cracking, which is well above the impact resistance of DP 1180 steel. The local true plastic strain can reach 53.4% in biaxial stretching showing excellent formability of the material. The microstructure characterization shows that the volume fraction of retained austenite decreases exponentially with increasing plastic strain under dynamic biaxial stretching. Scanning electron microscopy analysis of cracks formed after drop weight impact testing with 120 J energy reveals a ductile fracture surface consisting of elongated dimples formed by MnS inclusions which are surrounded by fine chisel-point type dimples. The potential of Q&P treated steels for application in the automotive industry is discussed.
Keywords
HIGH-STRENGTH STEELS, TEMPERING MARTENSITIC STEEL, RETAINED AUSTENITE, DEFORMATION-BEHAVIOR, TENSILE PROPERTIES, INDUCED PLASTICITY, HEAT-TREATMENT, TRANSFORMATION, TEMPERATURES, ENHANCEMENT, Advanced high strength steels, Quenching and partitioning, Impact, resistance, Microstructure, retained austenite

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MLA
Xia, Peikang, et al. “Mechanical Behavior and Microstructure Evolution of a Quenched and Partitioned Steel during Drop Weight Impact and Punch Testing.” MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol. 737, 2018, pp. 18–26.
APA
Xia, P., Sabirov, I., Molina-Aldareguia, J., Verleysen, P., & Petrov, R. (2018). Mechanical behavior and microstructure evolution of a quenched and partitioned steel during drop weight impact and punch testing. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 737, 18–26.
Chicago author-date
Xia, Peikang, Ilchat Sabirov, Jon Molina-Aldareguia, Patricia Verleysen, and Roumen Petrov. 2018. “Mechanical Behavior and Microstructure Evolution of a Quenched and Partitioned Steel during Drop Weight Impact and Punch Testing.” MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 737: 18–26.
Chicago author-date (all authors)
Xia, Peikang, Ilchat Sabirov, Jon Molina-Aldareguia, Patricia Verleysen, and Roumen Petrov. 2018. “Mechanical Behavior and Microstructure Evolution of a Quenched and Partitioned Steel during Drop Weight Impact and Punch Testing.” MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 737: 18–26.
Vancouver
1.
Xia P, Sabirov I, Molina-Aldareguia J, Verleysen P, Petrov R. Mechanical behavior and microstructure evolution of a quenched and partitioned steel during drop weight impact and punch testing. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. 2018;737:18–26.
IEEE
[1]
P. Xia, I. Sabirov, J. Molina-Aldareguia, P. Verleysen, and R. Petrov, “Mechanical behavior and microstructure evolution of a quenched and partitioned steel during drop weight impact and punch testing,” MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol. 737, pp. 18–26, 2018.
@article{8591312,
  abstract     = {In this work, a Fe-0.25C-3.0Mn-1.5Si-0.023Al-0.015Cr (wt%) steel was subjected to the quenching and partitioning (Q&P) treatment, and its mechanical behavior and microstructure evolution during drop weight impact testing and quasi-static punch testing were thoroughly analyzed. It is shown that the 1 mm thick Q&P steel sheet can withstand 110 J impact energy without any (micro) cracking, which is well above the impact resistance of DP 1180 steel. The local true plastic strain can reach 53.4% in biaxial stretching showing excellent formability of the material. The microstructure characterization shows that the volume fraction of retained austenite decreases exponentially with increasing plastic strain under dynamic biaxial stretching. Scanning electron microscopy analysis of cracks formed after drop weight impact testing with 120 J energy reveals a ductile fracture surface consisting of elongated dimples formed by MnS inclusions which are surrounded by fine chisel-point type dimples. The potential of Q&P treated steels for application in the automotive industry is discussed.},
  author       = {Xia, Peikang and Sabirov, Ilchat and Molina-Aldareguia, Jon and Verleysen, Patricia and Petrov, Roumen},
  issn         = {0921-5093},
  journal      = {MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING},
  keywords     = {HIGH-STRENGTH STEELS,TEMPERING MARTENSITIC STEEL,RETAINED AUSTENITE,DEFORMATION-BEHAVIOR,TENSILE PROPERTIES,INDUCED PLASTICITY,HEAT-TREATMENT,TRANSFORMATION,TEMPERATURES,ENHANCEMENT,Advanced high strength steels,Quenching and partitioning,Impact,resistance,Microstructure,retained austenite},
  language     = {eng},
  pages        = {18--26},
  title        = {Mechanical behavior and microstructure evolution of a quenched and partitioned steel during drop weight impact and punch testing},
  url          = {http://dx.doi.org/10.1016/j.msea.2018.09.015},
  volume       = {737},
  year         = {2018},
}

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