Ding, Ran

Guo, Hui

He, Jianguo

Zhao, Aimin

Zhi, Chao

English

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8th International Conference on Physical and Numerical Simulation of Materials Processing (ICPNS)14–17 October 2016Seattle, Washington | Hosted by Purdue UniversitySESSION 5: IRON AND STEEL, HARBOR HALLCo-Chairs: Xixiang Zhang, King Abdullah University of Science and Technology; Jianming Gong, Nanjing Tech UniversitySUNDAY, OCTOBER 16, 2016The effect of Mn and Cr on the microstructures and  mechanical properties of nanobainite steelsHui Guo; Aimin Zhao; Chao Zhi; Jianguo He; Ran Ding, University of Science and Technology BeijingABSTRACTThe effects of Mn and Cr on low-temperature bainitic transformation kinetics, microstructures, and mechanical properties in high-carbon Si–Al-rich alloy steel were determined using dilatometry, optical microscope (OM), scan-ning electron microscopy (SEM), X-ray diffraction (XRD), and tensile tests. The results showed that Mn and Cr would extend bainitic incubation period and completion time. And with the increase of Mn and Cr, the bainitic ferrite plate thickness decreased and the volume fraction of retained austenite increased. TRIP effect was observed dur-ing tensile testing which improved the overall mechanical properties. The increase of Mn can improve the strength to a certain extent, but reduced the ductility. The increase of Cr can improve the ductility of nanobainite steels which transformed at a low-temperature. Nanobainitic steel, which was austempered at 230C, exhibited excellent mechanical properties with ultimate tensile strength of 2146 MPa, total elongation of 12.95%.KEYWORDS: nanobainite, retained austenite, TRIP effect

The effect of Mn and Cr on the microstructures and mechanical properties of nanobainite steels

https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1019&context=icpns

The effect of Mn and Cr on the microstructures and mechanical properties of nanobainite steels

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