Article
Mechanics
Samaneh Isavand, Mostafa Kardan-Halvaei, Ahmad Assempour
Summary: The study aimed to predict the deformation behavior and forming limits of ferrite-pearlite steels by incorporating microstructural characteristics and mechanical properties. Results showed that microstructural inhomogeneity led to the appearance of micro-localized deformation bands, and the local deformation pattern at the micron-scale significantly depended on the microstructural morphology and loading direction.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Construction & Building Technology
Dharanidharan Arumugam, Dayakar L. Naik, Hizb Ullah Sajid, Ravi Kiran
Summary: This study investigated the composition and mechanical properties of metallurgical phases in ASTM A36 steels after exposure to high temperatures. Nanoindentation testing and clustering analysis were used to extract descriptive features and analyze the data. The results showed variations in volume fractions, hardness, and Young's modulus of ferrite and pearlite at different temperature exposures. A quadratic relationship was also observed between the nanoindentation hardness of pearlite and the yield and tensile strengths of the steels.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Tae-Woon Hong, Sang-In Lee, Jae-Hyeok Shim, Myoung-Gyu Lee, Joonho Lee, Byoungchul Hwang
Summary: An artificial neural network model has been developed to accurately predict the tensile properties of ferrite-pearlite steels. The model uses alloying elements and microstructural factors as input parameters, and yield strength and tensile strength as output parameters. The ANN model was found to predict tensile properties more accurately than existing equation models.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Fan Zhao, Xinhua Liu, Zhihao Zhang, Jianxin Xie
Summary: This study investigates the effect of nitrogen content on the microstructure, mechanical properties, and deformation behaviors of a medium-carbon ferritic-pearlitic steel. The results show that nitrogen addition has little effect on the microstructure but coarsens the steel slightly. While nitrogen is a strong element for solid solution strengthening, its addition only marginally improves the strength of the steel and has little effect on its ductility. However, the toughness of the steel is significantly decreased by the addition of nitrogen. The yield-point phenomenon in the tensile process is first strengthened and then weakened as the nitrogen content increases. This phenomenon is closely related to the dislocation behaviors in proeutectoid ferrite and influenced by the dislocation locking effect caused by interstitial nitrogen atoms and the dislocation pinning effect caused by Fe3N phases.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Carl Slater, Bharath Bandi, Pedram Dastur, Claire Davis
Summary: This study presents a new alloy design approach to reduce banding in commercial dual-phase steels by utilizing co-segregation. Phase field modeling predicts the segregation and phase transformation behaviors of the new alloy. Experimental results show a significant reduction in banding after hot rolling and cold rolling annealing in the new alloy.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
S. Janakiram, P. Sudharshan Phani, Govind Ummethala, Hima Viswa Jagdeesh, Sairam K. Malladi, J. Gautam, Leo A. I. Kestens
Summary: This study presents the results of temperature and composition dependent recovery behavior of ferrite-pearlite high strength steels. Microstructure-property correlations at the micrometer length scale are established to provide new insights on the driving force for recovery kinetics. Simple recovery models are discussed to complement the microstructural observations. These results offer important insights into the role of individual phases in the recovery of ferrite-pearlite high strength steels.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Hai Qiu, Rintaro Ueji, Tadanobu Inoue
Summary: Luders deformation is a type of discontinuous yielding in ferrite-pearlite steel, characterized by the yield-point phenomenon and localized plastic bands. The correlation between the yield-point phenomenon and the formation of plastic bands is unclear. In this study, the global and local deformation behaviors in the tension processes of four ferrite-pearlite steels were examined to investigate this correlation. The main findings are: (1) the degree of yield drop decreased with an increase in the pearlite fraction, and (2) a plastic band was formed at a certain stress level smaller than the upper yield stress; when the stress level was larger than 92% of the upper yield stress, the upper yield point disappeared.
Article
Nanoscience & Nanotechnology
Gottfried Laschet, M. Abouridouane, M. Fernandez, M. Budnitzki, T. Bergs
Summary: This paper presents a multiscale approach to investigate the effect of the ferrite-pearlite microstructure after annealing on the subsequent machining process of steel gears. The flow behavior of ferrite and pearlite at different scales is characterized and compared with experimental measurements.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Metallurgy & Metallurgical Engineering
Xin-bo Ji, Si-xin Zhao, Li-ming Fu, Jian Peng, Ji-aqiang Gao, Da-jiang Yu, Zong-ze Huang, Ai-dang Shan
Summary: The study found that different ferrite grain sizes and contents have a significant impact on the high-cycle fatigue properties of pearlite-ferrite dual-phase steel. The different crack propagation paths in the two DP steels led to differences in fatigue strength.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Chun-Peng Liu, Guan-Zhen Zhang, Peng-Tao Liu, Chun-Huan Chen, Rui-Ming Ren
Summary: In the process of rolling contact fatigue (RCF), plastic strain and stress field contribute to grain refinement, leading to the generation of dislocations and subboundaries that evolve into high-angle grain boundaries, accelerating the propagation of RCF cracks.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2021)
Article
Metallurgy & Metallurgical Engineering
Noriyuki Tsuchida, Rintaro Ueji, Tadanobu Inoue
Summary: The study found that decreasing deformation temperature increased lower yield strength and tensile strength, while decreasing uniform and total elongations. In addition, at the point of blue brittleness, tensile strength increased while uniform and total elongations decreased.
ISIJ INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Xinjun Shen, Baojun Wang, Long Chen, Dezhi Li, Zijian Wang, Guodong Wang
Summary: This study aims to improve the microstructure of hot-rolled C-Mn steels by ferrite dynamic recovery or recrystallization. By adding 1.5 wt.% Al to C-Mn steel, ferrite dynamic recovery or recrystallization occurs during hot rolling, but the microstructure is not refined. However, the addition of Nb and Ti suppresses ferrite dynamic recrystallization and results in a microstructure with subgrains and refined ferrite grains.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Yuto Yajima, Norimitsu Koga, Chihiro Watanabe
Summary: The inhomogeneous strain distribution and morphology of cementite introduced by tensile deformation of pearlitic steel were quantitatively evaluated. Spheroidized colonies exhibited higher strains and the degree of spheroidization was found to be the main influence on deformability. The values of introduced strain varied in different types of colonies with the same Lcem/Lcol ratio.
MATERIALS CHARACTERIZATION
(2021)
Article
Metallurgy & Metallurgical Engineering
Xuehui Hao, Changzheng Wang, Shuai Guo, Jie Ma, Hui Chen, Xingchuan Zhao
Summary: This study aims to investigate the effect of Cr on the corrosion behavior of ferrite-pearlite steels in an acidic environment. The results from immersion tests and electrochemical experiments show that alloyed Cr improves the corrosion resistance of the steels by reducing the corrosion rate and promoting the formation of protective compounds. This research provides valuable insights for the engineering application of ferrite-pearlite steels in marine environments.
ANTI-CORROSION METHODS AND MATERIALS
(2023)
Article
Geochemistry & Geophysics
Wenli Lin, Ang Liu, Wuwei Mao, Zain Maqsood, Junichi Koseki
Summary: The study investigates the micromechanical behavior of saturated coral sands using the acoustic emission (AE) technique, which emerges as a potential method for back-evaluating difficult to assess soil mechanical parameters. Results show specific mathematical relations between AE rate and soil mechanical parameters, similar to those for silica sands. The precise location of AE sources corresponds with the appearance of deformed specimens, tracing the complex process of shear banding. Three acoustic precursors observed before complete soil failure could serve as indicators for early warning of soil's instability.