Wang, Gai-rong Yang, Hong-ying Liu, Yuan-yuan Tong, Lin-lin Auwalu, Ali
Published in
International Journal of Minerals, Metallurgy and Materials
Mechanical activation (MA) of malachite was carried out by dry planetary grinding (DPG) and wet Isa grinding (WIG) methods. When the rotational speed was increased to 400 r/min in DPG, the specific surface area of malachite reached the maximum and the particle size reached the minimum of 0.7–100 µm. Agglomeration occurred between mineral particles ...
Gao, Zhao-hai Yu, Wei Chen, Xu Xie, Bao-sheng Cai, Qing-wu
Published in
International Journal of Minerals, Metallurgy and Materials
To ensure the quality of heavy plate products as determined by ultrasonic inspection, it is necessary to effectively control defects such as cracks and shrinkage cavities in heavy plates. Generally, some defects such as large size cracks exist due to insufficient deformation in the center of traditionally rolled plates. Compared with the traditiona...
Su, He-tao Zhou, Fu-bao Shi, Bo-bo Qi, Hai-ning Deng, Jin-chang
Published in
International Journal of Minerals, Metallurgy and Materials
Coalfield fires are considered a global crisis that contributes significantly to environmental destruction and loss of coal resources and poses a serious threat to human safety and health. In this paper, research related to the initiation, development, and evolution of coalfield fires is reviewed. The existing detection and control techniques of co...
Singh, Gurmail Bala, Niraj Chawla, Vikas
Published in
International Journal of Minerals, Metallurgy and Materials
The present paper deals with the investigation of microstructure and high-temperature hot corrosion behavior of high-velocity oxy fuel (HVOF)-produced coatings. Two powder coating compositions, namely, Ni22Cr10Al1Y alloy powder and Ni22Cr10Al1Y (80wt%; microsized)-silicon carbide (SiC) (20wt%; nano (N)) powder, were deposited on a T-22 boiler tube ...
Huo, Yu-kun Zhao, Li-hua An, Hang-hang Wang, Min Zou, Chang-dong
Published in
International Journal of Minerals, Metallurgy and Materials
Aiming at the problem of negative segregation under a bloom surface, a coupling macrosegregation model considering electromagnetic field, flow, heat, and solute transport was established based on the volume average method to study the effect of in-mold electromagnetic stirring (M-EMS) on the negative segregation under the bloom surface. In the mode...
Deng, Zheng-hua Yin, Hai-qing Jiang, Xue Zhang, Cong Zhang, Guo-fei Xu, Bin Yang, Guo-qiang Zhang, Tong Wu, Mao Qu, Xuan-hui
...
Published in
International Journal of Minerals, Metallurgy and Materials
The machine-learning approach was investigated to predict the mechanical properties of Cu—Al alloys manufactured using the powder metallurgy technique to increase the rate of fabrication and characterization of new materials and provide physical insights into their properties. Six algorithms were used to construct the prediction models, with chemic...
Liu, Man Xu, Guang Tian, Jun-yu Yuan, Qing Chen, Xin
Published in
International Journal of Minerals, Metallurgy and Materials
The effect of austempering time after the bainitic transformation on the microstructure and property in a low-carbon bainite steel was investigated by metallography and dilatometry. The results showed that by prolonging the austempering time after the bainite transformation, the amount of large-size martensite/austenite islands decreased, but no si...
Parvizian, Parnia Morakabati, Maryam Sadeghpour, Saeed
Published in
International Journal of Minerals, Metallurgy and Materials
The effect of rolling temperature on both two- and single-phase regions and annealing in a temperature range of 700–950°C on the microstructure and mechanical properties of Ti—5Al—4V—2Fe—1Mo alloy was investigated. The results indicated that the best balance of strength and ductility is obtained by rolling in the two-phase region due to the globula...
Ma, Jing Feng, Fan Yu, Bai-qing Chen, Hai-feng Fan, Li-feng
Published in
International Journal of Minerals, Metallurgy and Materials
Dual-phase accelerated cooling (DPAC) was applied to X80 pipeline steel to obtain its microstructure with different amounts of bainite and ferrite. The microstructure, hardness, and polarization behaviors of the steel, cooled to different temperatures, were investigated. Results showed that, with decreasing cooling temperature, the amount of polygo...
Kiahosseini, Seyed Rahim Ahmadian, Hossein
Published in
International Journal of Minerals, Metallurgy and Materials
Al composites are of interest due to their appropriate ratio of strength to weight. In our research, an Al/Co3O4 nanocomposite was generated using a sintering technique. The powders of Al with various Co3O4 nanoparticle contents (0wt%, 0.5wt%, 1.0wt%, 1.5wt%, 2.0wt%, and 2.5wt%) were first blended using planetary milling for 30 min, and compressed ...
