Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science
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#1Sang-In Lee (Seoul National University of Science and Technology)H-Index: 6
#2Seung-Wan Lee (Seoul National University of Science and Technology)
Last. Byoungchul Hwang (Seoul National University of Science and Technology)H-Index: 25
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The correlation of delta-ferrite with the tensile and Charpy impact properties of austenitic Fe-23Mn-Al-C steels with different Al and C contents for cryogenic applications was investigated in this study. Microstructural analysis showed that the two steels with duplex phases had banded or layered microstructures with relatively fine-grained austenite and coarse-grained delta-ferrite which increased with Al content and decreased with C content. The geometrically necessary dislocation density incr...
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#1Sama Safarloo (Sharif University of Technology)
#2Siamak Serajzadeh (Sharif University of Technology)H-Index: 25
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#1Adriana Eres-Castellanos (TUK: Kaiserslautern University of Technology)H-Index: 4
#2Lucia Morales-Rivas (TUK: Kaiserslautern University of Technology)H-Index: 12
Last. Carlos Garcia-Mateo (CSIC: Spanish National Research Council)H-Index: 41
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#1Chetan Kadgaye (IITR: Indian Institute of Technology Roorkee)
#2Sk Md Hasan (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 4
Last. Anish Karmakar (IITR: Indian Institute of Technology Roorkee)H-Index: 9
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The present study has focused on the detailed dilatometric and electron microscopic analysis of the formation of austenite and its decomposition in two Cerium (Ce) modified steels containing 0.6 and 0.03 wt pct Ce. Despite a long incubation time, the austenite formation is very fast in the high-Ce steel (0.6 wt pct Ce) during heating. Whereas, the low-Ce steel (0.03 wt pct Ce) promotes early nucleation of austenite but shows a significant delay in the completion of the transformation. Similar tr...
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#1Byeong-Hun Park (Changwon National University)
#2Chi-Won Kim (Changwon National University)H-Index: 2
Last. Hyun-Uk Hong (Changwon National University)H-Index: 22
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As part of efforts to fabricate FeMnAlC lightweight steels suitable for high-temperature applications, the influence of Nb addition on the microstructure and tensile deformation behaviors has been investigated. Electron backscattered diffraction analysis showed that Fe–20Mn–8Al–1.0C base steel consisted of a full austenite matrix after solution treatment, and the addition of 0.1 wt pct Nb resulted in grain refinement from 56 to 23 μm without significant changes in the microstructure. After aging...
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#1Michael C. Gao (DOE: United States Department of Energy)H-Index: 36
#2E-Wen HuangH-Index: 17
Last. Liang Jiang (Yantai University)
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#1Sheng-Wen Bai (THU: Tsinghua University)H-Index: 5
#2Gang Fang (THU: Tsinghua University)H-Index: 18
Last. Jie Zhou (TU Delft: Delft University of Technology)H-Index: 47
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#1N. Volz (FAU: University of Erlangen-Nuremberg)H-Index: 4
#2Fei Xue (FAU: University of Erlangen-Nuremberg)H-Index: 11
Last. Matthias Göken (FAU: University of Erlangen-Nuremberg)H-Index: 25
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The γ′ volume fraction is a key parameter in precipitation-strengthened Co- and Ni-base superalloys and mainly determines the alloys’ properties. However, systematic studies with varying γ′ volume fractions are rare and the influence on thermal expansion has not been studied in detail. Therefore, a series of six Ta-containing Co-based alloys was designed with compositions on a γ–γ′ tie-line, where the γ′ volume fraction changes systematically. During solidification, Laves (C14-type) and µ (D85-t...
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