Flow Characteristics of a Medium–High Carbon Mn-Si-Cr Alloyed Steel at High Temperatures

Journal Article · Thu Aug 15 04:00:00 EDT 2019 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-019-04197-7· OSTI ID:22970588

Yin, Baoguo; Han, Ying ^[1]; Wang, Wen ^[2]; Li, Huijun; Liu, Yongchang ^[3]; Ran, Xu ^[1]

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1. Changchun University of Technology, Key Laboratory of Advanced Structural Materials, Ministry of Education (China)
2. Xi’an University of Architecture and Technology, School of Metallurgical Engineering (China)
3. Tianjin University, School of Materials Science and Engineering (China)

This study investigates the deformation behavior of a medium–high carbon Mn-Si-Cr alloyed steel using hot compression tests. The tests were performed on a Gleeble 1500D thermomechanical simulator with a temperature range of 950–1150 °C and a strain rate range of 0.005–5 s{sup −1}. The processing parameters (i.e., temperature T, strain rate ε-dot , and strain ε) influenced the flow softening behavior of the material. The dynamic recrystallization occurred during hot deformation. Correlations between the Zener–Hollomon parameter and the size and the volume fraction of new recrystallized grains were developed. These findings are described using mathematical models. The strain-compensated Arrhenius-type constitutive model and the multiple-linear model were developed based on the true stress–strain curves we obtained. A comparative study was performed in order to measure the validity of the two models in representing hot deformation behavior. Both models were shown to accurately predict flow stress across a range of conditions, reflecting the characteristics of true stress–strain curves by exhibiting work hardening, dynamic recovery, and dynamic recrystallization. The empirical multiple-linear mathematical model was shown to be more efficient and accurate when calculating the hot deformation behavior of steel at elevated temperatures.

• OSTI ID: 22970588
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 8 Vol. 28; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON
FLOW STRESS
MATHEMATICAL MODELS
NANOSTRUCTURES
STEELS
STRAIN HARDENING
STRAIN RATE