Results 61 to 70 of about 5,766 (227)

Elimination of the Stray Grain Defects of Single Crystal Blade by Variable Wall Thickness Based on Integral Ceramic Mold

Metals, 2022
The stray grain defect is often found at the platform in the process of directional solidification of single crystal blades because local undercooling easily occurs in this area.
Zhefeng Liu, Kai Miao, Weibo Lian, Zhongliang Lu, Dichen Li   +4 more
doaj   +1 more source

Phase Transformation Behavior of Continuously Cooled Fe–C–V–(Mo) Alloys

steel research international, EarlyView.
Additions of vanadium and molybdenum microalloying are shown to reshape phase transformations in clean low‐carbon steels. By tracking microstructural shifts during continuous cooling, the work uncovers the correlation between transformation kinetics, ferrite morphology, and hardness.
Anastasiya Tselikova, Jannik Zuraszek, Ulrich Krupp, Rolf Schmidt, Hardy Mohrbacher, Alexander Gramlich   +5 more
wiley   +1 more source

Heterogenous Grain Nucleation in Al-Si Alloys: Types of Nucleant Inoculation

Metals
The objective of the current work is to establish, on the one hand, the conventional mechanisms of grain refining and, on the other hand, the effect of the refining-modification interaction in Sr-modified Al-Si alloys on the achieved grain refining and ...
Ehab Samuel, Hicham Tahiri, Agnes M. Samuel, Fawzy H. Samuel   +3 more
doaj   +1 more source

Undercooling and demixing of copper-based alloys [PDF]

Microgravity - Science and Technology, 2006
Since the beginning of materials science research under microgravity conditions immiscible alloys have been an interesting subject. New possibilities to investigate such systems are offered by containerless processing techniques. Of particular interest is the ternary system Cu-Fe-Co, and its limiting binaries, Cu-Co and Cu-Fe.
Kolbe, M., Brillo, J., Egry, I., Herlach, D.M., Ratke, L., Chatain, D., Tinet, N., Antion, C., Battezzati, L., Curiotto, S., Johnson, E., Pryds, N.   +11 more
openaire   +3 more sources

Tailored Hardening and Isothermal Bainitizing of Additively Manufactured Nitrogen‐Enhanced Martensitic Chromium Steel

steel research international, EarlyView.
Tailored heat treatments transform additively manufactured high‐nitrogen martensitic Cr steel from austenitic as‐built condition to high‐hardness states. Isothermal bainitizing at 250°C generates an ultrafine nanostructure and achieves higher hardness than conventional hardening and tempering, highlighting a promising postprocessing route for laser ...
Philip König, Sebastian Weber, Jonathan Lentz   +2 more
wiley   +1 more source

Formation of Cellular Structure on Metastable Solidification of Undercooled Eutectic CoSi-62 at. %

Crystals, 2017
The relationship between emissivity, delay time, and surface growth for metastable solidification of CoSi-62 at. % eutectic alloys is reported from undercooling experiments conducted using electrostatic levitation.
Sangho Jeon, Douglas M. Matson
doaj   +1 more source

The Stefan Problem with Nonlinear Kinetic Undercooling [PDF]

The Quarterly Journal of Mechanics and Applied Mathematics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Evans, J. D., King, J. R.
openaire   +1 more source

Revisiting olivine‐phyric shergottites: Pyroxene crystallization pressure and the role of undercooling

Meteoritics &Planetary Science, EarlyView.
Abstract Shergottites are the most abundant meteorites from Mars and a major source of information on magma reservoirs, transport, and eruption, particularly in the late Hesperian northern hemisphere. Conflicting interpretations have arisen on the crystallization conditions of pyroxene in olivine‐phyric shergottites.
Roger H. Hewins, Brigitte Zanda, Arnaud Duverger   +2 more
wiley   +1 more source

Effect of Trace Phosphorus Addition on the Solidification Behavior and Local Mechanical Response of β-Sn Alloys

Crystals
To investigate the effects of trace phosphorus (P) addition on the solidification behavior, microstructure, and local mechanical response of β-Sn alloys, Sn–P alloys containing 0.02, 0.05, and 0.08 wt.% P were prepared. Phase constitution, solidification
Yupeng Wang, Zhuangchao Zhan, Huilin Zhang, Hongbo Qin, Jiaqiang Huang, Wangyun Li, Caihang Liang, Lili Wang, Chengxu Lin, Mingzhen Hu   +9 more
doaj   +1 more source

Investigation on the leading phase of Al2O3/YAG eutectic crystals prepared by directional solidification

International Journal of Ceramic Engineering & Science, 2020
The leading phase of eutectic materials has an effect on the solidification behavior and further influences on their properties. Many studies have been carried out on the leading phase of metal/metal and nonmetal/metal eutectic alloys.
Yujie Zhong, Shengjie Wang, Yangru Liu, Qian Gao, Kuikui Wang, Xu Wang   +5 more
doaj   +1 more source