A systematic framework for choosing the most determinant combination of predictor features and solving the multiclass phase classification problem associated with high-entropy alloy (HEA) was recently proposed [1]. The data associated with that research paper, titled “Machine learning-based prediction of phases in high-entropy alloys”, is presented in this data article. This dataset is a systematic documentation and comprehensive survey of experimentally reported HEA microstructures. It contains microstructural phase experimental observations and metallurgy-specific features as introduced and reported in peer-reviewed research articles. The dataset is provided with this article as a supplementary file. Since the dataset was collected from experimental peer-reviewed articles, these data can provide insights into the microstructural characteristics of HEAs, can be used to improve the optimization HEA phases, and have an important role in machine learning, material informatics, as well as in other fields.

Ti-Mo alloys are promising biocompatible materials with lower elastic modulus than the extensively used Ti-6Al-4V alloy. However, research work done on these alloys indicate that their elastic modulus is still higher than that of the bone, even after the execution of numerous heat treatment procedures. Therefore, this study was aimed at adding Nb (non-toxic β stabilizer) to Ti-Mo system followed by the characterization of its microstructural and mechanical properties in the as-cast condition. This study will provide systematic preliminary information towards the design and development of novel biomedical components. The microstructure and phase analysis were carried out using optical microscope, SEM, and XRD. Mechanical tests were conducted using the uniaxial tensile test machine and Vickers microhardness tester. The as-cast Ti-11.1Mo-10.8Nb alloy consisted primarily of β phase and a possible small volume fraction of ω phase. The Vickers micro-hardness, elastic modulus, bending strength were measured as 311.62 HV0.5, 56.9 GPa 1671.4 MPa, respectively. The Ti-11.1Mo-10.8Nb alloy also exhibited ductile fracture behaviour during bend testing. The Ti-11.1Mo-10.8Nb design is a promising alloy for biomedical applications.

In this work, porous titanium (Ti) foams were successfully produced using spark plasma sintering technique at four different temperatures (up to 650 °C), in conjunction with vacuum sintering (used as a post-treatment) at a constant temperature of 1200 °C. To obtain a porous structure, 60 vol% of sodium chloride was included as a pore spacer, with the addition of polyethylene glycol solution for Ti–NaCl interparticle binding. The work aimed at studying the effect of sintering temperature on the final pore features and compression resistance of the porous titanium foams. X-ray diffraction and scanning electron microscopy as characterization techniques were used to analyze phases and pore evolutions, respectively. The results showed that the pore characteristics and the final porosity of porous titanium foams profoundly depend on the sintering temperature. The lowest porosity of approximately 53.9 vol%, with denser pore walls, was seen at the highest sintering temperature. Such foams sintered at 650 °C can resist the compression stress as high as 123 MPa while exhibiting the stiffness value of 8.1 GPa. The results indicate that the porous Ti foams produced have great potential for applications in hard tissue engineering.