China Foundry
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Prediction of mushy zone permeability of Al-4.5wt%Cu alloy during solidification by phase field model and CFD simulation
China Foundry - - 2019
Liquid permeability of the mushy zone is important for porosity formation during the solidification process. In order to investigate the permeability of the mushy zone, an integrated model was developed by combining the phase field model and computational fluid dynamics (CFD) model. The three-dimensional multigrain dendrite morphology was obtained by using the phase field model. Subsequently, the ...... hiện toàn bộ
A comparative study on Sn macrosegregation behavior of ternary Al-Sn-Cu alloys prepared by gravity casting and squeeze casting
China Foundry - - 2023
Effect of heat treatment on microstructure, mechanical and tribological properties of in-situ (TiC+TiB)/TC4 composites by casting
China Foundry - Tập 20 - Trang 207-217 - 2023
To enhance the performance of in-situ synthesized 6vol.% (TiC+TiB)/TC4 titanium matrix composites fabricated by casting, a variety of heat treatment processes were carried out. Upon conducting microstructure observations following various heat treatments, it was found that the composites exhibit a basketweave microstructure, consisting of an α phase and a transformed β phase. The sizes of (α+β) ph...... hiện toàn bộ
Microstructure and cellular transition characteristic of Ti-42Al-3Nb-1Mo-0.1B alloy
China Foundry - Tập 17 - Trang 423-428 - 2020
The microstructure and cellular transition characteristics of an intermetallic Ti-42Al-3Nb-1Mo-0.1B (at.%) alloy were investigated. The as-cast microstructure of the alloy is mainly composed of (α2+γ) lamellar structure and (β+γ) mixture structure, which distributes along the boundaries of the lamellar colonies. In order to study the phase transformation of lamellar structure at aging temperature,...... hiện toàn bộ
Effects of electrode configuration on electroslag remelting process of M2 high-speed steel ingot
China Foundry - Tập 16 - Trang 126-134 - 2019
The electrode configuration determines the thermophysical field during the electroslag remelting (ESR) process and affects the final microstructure of the ingot. In this work, ingot with a diameter of 400 mm was prepared with two electrode configuration modes of single power ESR process, namely one electrode (OE) and two series-connected electrodes (TSCE). Finite element simulation was employed to...... hiện toàn bộ
Finite element modeling of macrosegregation coupled with shrinkage cavity in steel ingots using arbitrary Lagrangian-Eulerian model
China Foundry - - 2019
Composition formula of Al-TMs high-entropy alloys derived by cluster-plus-glue-atoms model and its experimental verification
China Foundry - Tập 19 - Trang 544-550 - 2022
High-entropy alloys (HEAs) are based on solid solutions which characterized by chemical short-range ordering (CSRO), but there is no accurate structural tool to address CSRO characteristic, which obstacles precise composition design for HEAs. In this study, based on the cluster-plus-glue-atoms model, the composition law of Al-TMs (TMs, transition metals) HEAs with BCC and FCC structures was reveal...... hiện toàn bộ
Microstructure and mechanical properties of a cast heat-resistant rare-earth magnesium alloy
China Foundry - Tập 20 - Trang 289-298 - 2023
Microstructure, mechanical properties and phase transformation of a heat-resistant rare-earth (RE) Mg-16.1Gd-3.5Nd-0.38Zn-0.26Zr-0.15Y (wt.%) alloy were investigated. The as-cast alloy is composed of equiaxed α-Mg matrix, net-shaped Mg5RE and Zr-rich phases. According to aging hardening curves and tensile properties variation, the optimized condition of solution treatment at 520 °C for 8 h and sub...... hiện toàn bộ
Effect of Cr on microstructure and oxidation behavior of TiAl-based alloy with high Nb
China Foundry - Tập 15 - Trang 17-22 - 2018
Three novel multi-microalloying TiAl-based alloys containing high Nb were designed and fabricated. Thermogravimetric method was applied to investigate the influence of Cr on the oxidation behavior of high Nb-TiAl alloy at 1,073 K for 200 h in laboratory air. The 2at.% and 4at.% Cr were added into the alloy, (respectively named 2Cr and 4Cr compared to the Cr-free ternary alloy, 0Cr alloy). The allo...... hiện toàn bộ
A study on effects of ceramic foam filter on flow aspect through water modeling experiment
China Foundry - Tập 14 - Trang 216-225 - 2017
Casting defects that are closely related to entrapped air bubbles and metallic oxides occur very frequently in the sand mold casting process. Many researchers have shown that these defects can be reduced by adopting an appropriate gating system design. However, it is difficult for field engineers to identify a specific gating system that is more appropriate for their products. In this study, we tr...... hiện toàn bộ
Tổng số: 343
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