Article
Thermodynamics
Qiang Long, Na Meng, Fuwen Chen, Ligang Zhang, Xiaoma Tao, Libin Liu, Guanglong Xu, Yuwen Cui
Summary: The phase equilibria and microstructure development of Mg-Gd-Sr alloys were studied. The onset temperatures of liquid formation were measured experimentally. Additionally, a thermodynamic database of the Mg-Gd-Sr ternary system was developed for the first time using the CALPHAD approach and First-Principles calculations, enabling a well reproduction of the experimental findings.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Metallurgy & Metallurgical Engineering
Xiaopan Wu, Changrong Li, Cuiping Guo, Zhenmin Du
Summary: The Mg-Gd-Y ternary system has been thermodynamically re-assessed using the CALPHAD technique, and the accuracy of the assessment has been confirmed through experimental evidence.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Tian Yin, Zheng Ma, Hongcan Chen, Qun Luo, Jieyu Zhang, Guangxin Wu
Summary: The phase equilibria and crystal structure of the Mg-rich corner in the Mg-Zn-Sm system were determined experimentally. A self-consistent thermodynamic description was obtained based on the experimental data.
Article
Thermodynamics
Yiheng Wang, Kang Gao, Xiaoma Tao, Won-Seok Ko, Jiang Wang, Fuwen Chen, Guanglong Xu, Yuwen Cui
Summary: The phase equilibria of Mg-Sc-Zn alloy were experimentally investigated, and important phase transitions and solid solubility were discovered. A thermodynamic database of the Mg-Sc-Zn system was successfully developed, providing important reference for the compositional design of Mg-Sc based shape memory alloys.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2022)
Article
Metallurgy & Metallurgical Engineering
Janet M. Meier, Jiashi Miao, Song-Mao Liang, Jun Zhu, Chuan Zhang, Josh Caris, Alan A. Luo
Summary: This study conducted key experiments and CALPHAD calculations to provide critical understanding of high-strength Mg-Gd-Y-Zn alloys. The experimental results were used to validate and improve the thermodynamic database of this alloy system, and accurately predict the development of promising high-strength Mg-Gd-Y-Zn alloys.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Crystallography
Chenguang Yang, Jiadong Wang, Liqin Wu, Qiuyu Zeng, Liwei Zhang
Summary: In this study, the phase equilibria of the Mg-Ni-Gd ternary system were assessed using the CALPHAD method. A set of thermodynamic parameters were obtained and used to calculate the isothermal section, liquidus projections, and invariant reactions. The results showed good agreement with experimental data.
Article
Thermodynamics
Yexin Lang, Haoliang Xiang, Jian Peng, Huashan Liu
Summary: Phase relations of the Mg-Gd-Er system at the Mg-rich corner were studied through experimental alloy sampling approach. Isothermal sections at 673 K and 773 K were determined using EPMA and XRD. No ternary compounds were found at the investigated temperatures. MgEr and MgGd can form a continuous solid solution, and five three-phased fields were identified in both isothermal sections at 673 K and 773 K.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Chemistry, Physical
B. S. Liu, H. X. Li, Y. P. Ren, H. B. Xie, H. C. Pan, M. Jiang, G. W. Qin
Summary: Investigation of phase relationships in the Mg-rich corner of the Mg-Zn-Gd ternary system at 400-475 degrees C reveals changes in equilibrium states, coexistence phenomena, and peritectic eutectic transformations. The compositions of the Z, I, F, and W phases and the solubility of Gd in the alpha-Mg solid solution are significantly affected by the addition of Zn when the phases are in equilibrium.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Marius H. Wetzel, Mario J. Kriegel, Christian Schimpf, Andreas Leineweber
Summary: Despite controversy regarding the pressure/temperature stability range of the gamma'-Fe4N phase, this study presents a thermodynamic database for calculating phase equilibria in the Fe-rich part of the Fe-N system under high-pressure conditions. The calculated phase equilibria up to 13 GPa show reasonable agreement with previous experimental results and indicate the termination of the gamma' phase region at a quadruple point at 5.0 GPa and 713 K.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Honghui Xu, Hai-Lin Chen, Peisheng Wang, Tao Zhou
Summary: The phase equilibria of the Mg-Gd-Zn system at 500 degrees C in the region below 50 at.% Gd were studied, revealing nine stable ternary phases and establishing their composition ranges. A partial isothermal section was constructed for the region, providing valuable insight into the phase behavior of this system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
Cheng Liu, Qun Luo, Qin-Fen Gu, Qian Li, Kuo-Chih Chou
Summary: This study aims to experimentally determine the phase equilibria relationships of Mg-Ni-Y system, focusing on LPSOs, and establish a thermodynamic description. Four types of LPSOs are confirmed and their formation enthalpies are calculated. A new ternary compound, called tau phase, is observed for the first time, which is significant for the design of advanced magnesium-based alloys.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Rafael Rodriguez De Vecchis, Xin Wang, Soumya Sridar, Zhangwei Wang, Garrett J. Pataky, Wei Xiong
Summary: The remarkable combination of strength, toughness, and weldability makes HSLA steels suitable for naval and automobile applications. This study explores new precipitation strengthening routes using Heusler compounds in HSLA steels. Two compositions close to HSLA-115 steel were designed with the Fe2SiTi Heusler phase as the major strengthening phase. Modeling and experiments were conducted to understand the phase transformation and precipitation behavior. The results show a record high peak aged hardness of 717 HV, thanks to the contribution of the Fe2SiTi phase as a grain refiner and the formation of nanosized precipitates along with Cu clusters. The influence of Nb on the phase stability of the Heusler phase was also examined. In summary, this work introduces a new design pathway for the development of ultra-high-strength steels using Heusler compounds, benefiting from the synergic effect of grain refinement and precipitation strengthening.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Thermodynamics
S. Y. Yanga, J. Wang, X. Liua, X. P. Zhenga, H. J. Yea, Q. R. Yaoa, Y. S. Dua, G. H. Rao, H. Y. Zhoua
Summary: The phase equilibria of the Y-Co-Fe ternary system were experimentally studied using SEM-EDS and XRD. The formation of Y2(Co, Fe)17, Y(Co, Fe)3, and Y(Co, Fe)2 solid solution phases was observed. The solubility of Fe in YCo5 and Y2Co7, and the solubility of Co in Y6Fe23 were determined. The calculated results of the thermodynamic calculation using CALPHAD method showed good agreement with the experimental results. A set of self-consistent thermodynamic parameters for the Y-Co-Fe ternary system was obtained.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Thermodynamics
P. P. Liu, F. L. Dai, L. Luo, D. K. Chen, Q. R. Yao, J. Wang, G. H. Rao, H. Y. Zhou
Summary: In this study, the phase equilibria and phase transitions of the Sm-Co-Fe ternary system were investigated using experimental measurements and thermodynamic calculations. The results showed that no ternary intermetallic compounds were formed, and the system exhibited continuous solid solution phases formed from two different binary intermetallic compounds. Additionally, it was found that the intermetallic compound SmCo5 with a certain solubility of Fe was stable at 1073 K.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2022)
Article
Thermodynamics
Yangfan Liu, Cong Zhang, Bin Xu, Guoqiang Yang, Xue Jiang, Shuyan Zhang, Yongwei Wang, Ruijie Zhang, Haiqing Yin
Summary: By combining experimental data, phase equilibria determination, and calculated formation enthalpies, the thermodynamic parameters of the Mo-Co-B ternary system were optimized to calculate the isothermal sections, vertical section, and liquidus projection, showing reasonable agreement with reported phase diagrams and thermodynamic data.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2021)
Article
Thermodynamics
Juan Chen, Cong Zhang, Jiong Wang, Weimin Chen, Ying Tang, Lijun Zhang, Yong Du
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2015)
Article
Thermodynamics
Ying Tang, Lijun Zhang, Yong Du
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2015)
Article
Materials Science, Multidisciplinary
Ming Wei, Ying Tang, Lijun Zhang, Weihua Sun, Yong Du
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2015)
Article
Materials Science, Coatings & Films
Na Ta, Lijun Zhang, Ying Tang, Weimin Chen, Yong Du
SURFACE & COATINGS TECHNOLOGY
(2015)
Article
Materials Science, Multidisciplinary
Rong Wang, Weimin Chen, Ying Tang, Lijun Zhang, Yong Du, Zhanpeng Jin, Dragana Zivkovic
JOURNAL OF MATERIALS SCIENCE
(2016)
Article
Metallurgy & Metallurgical Engineering
X. Yang, Y. Tang, D. Cai, L. Zhang, Y. Du, S. Zhou
JOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY
(2016)
Article
Thermodynamics
Dandan Huang, Shuhong Liu, Ying Tang, Yong Du, Philip Nash, Bo Sundman
THERMOCHIMICA ACTA
(2016)
Article
Metallurgy & Metallurgical Engineering
Zhao Lu, Ying Tang, Lijun Zhang
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
(2017)
Article
Materials Science, Multidisciplinary
Shiyi Wen, Ying Tang, Jing Zhong, Lijun Zhang, Yong Du, Feng Zheng
JOURNAL OF MATERIALS RESEARCH
(2017)
Article
Chemistry, Physical
Ying Tang, Lijun Zhang
Article
Chemistry, Physical
Ying Tang, Lijun Zhang
Article
Thermodynamics
Ting Cheng, Ying Tang, Lijun Zhang
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2019)
Review
Thermodynamics
Ying Tang, Jiong Wang, Lijun Zhang
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2019)
Article
Metallurgy & Metallurgical Engineering
Yuanrong Liu, Weimin Chen, Jing Zhong, Ming Chen, Lijun Zhang
METALLURGICAL & MATERIALS ENGINEERING
(2017)