Synergistic effects of Y and Nd on grain refinement of Mg-Y-Nd-Al alloy

Zhao, Lili; Wang, Liping; Wang, Lei; Feng, Yu; Fan, Rui; Zhao, Sicong; Fu, Yuanke

doi:10.1088/2053-1591/ac4eba

Cited by 10 publications

(8 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the as-cast alloy, because there is a large number of Mg-RE eutectic phases at the grain boundaries, which are large-size brittle intermetallic compounds [ 29 , 30 ], the stress concentration easily occurs along the Mg-RE eutectic phases under the tensile loading, which leads to crack initiation and propagation [ 31 , 32 , 33 , 34 ]. As shown in Figure 12 a, the cracks in the as-cast alloy mainly originated from the Mg-RE eutectic phases at the grain boundary.…”

Section: Results and Analysismentioning

confidence: 99%

Effect of Solution Treatment Time on Microstructure Evolution and Properties of Mg-3Y-4Nd-2Al Alloy

Zhao

Feng

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

In order to explore the microstructure evolution of an Mg-RE alloy refined by Al during solution treatment, an Mg-3Y-4Nd-2Al alloy was treated at 545 °C for different time periods. Phase evolution of the alloy was investigated. After solution treatment, the Mg-RE eutectic phase in the Mg-3Y-4Nd-2Al alloy dissolves, the granular Al2RE phase does not change, the acicular Al11RE3 phase breaks into the short rod-like Al2RE phase, and the lamellar Al2RE phase precipitates in the grains. With the extension of solution time, the precipitated phase of the lamellar Al2RE increased at first and then decreased, and its orientation relationship with the matrix is <112>Al2RE//<21¯1¯0>Mg and {111}Al2RE//{0002}Mg. The undissolved granular Al2RE phase can improve the thermal stability of the alloy grain by pinning the grain boundary, and the grain size did not change after solution treatment. Solution treatment significantly improved the plasticity of the alloy. After 48 h of solution treatment, the elongation increased to 17.5% from 8.5% in the as-cast state.

show abstract

Section: Results and Analysismentioning

confidence: 99%

Effect of Solution Treatment Time on Microstructure Evolution and Properties of Mg-3Y-4Nd-2Al Alloy

Zhao

Feng

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…11,12 To date, research has focused on palliative nurses training programs, professional identity, core competence, work experience, and other aspects. [13][14][15] Existing scales are mainly used to investigate nurses' knowledge of palliative care; less attention has been paid to the development of tools assessing nurses' willingness to work in palliative care facilities. According to the theory of planned behavior, all factors that may affect behavior are indirectly related to behavioral intention.…”

Section: Discussionmentioning

confidence: 99%

Development of the Nurses' Willingness to Engage in Palliative Care Scale

Zhu

Yang

et al. 2022

J Hosp Palliat Nurs

View full text Add to dashboard Cite

Nurses play an important role in palliative care, and their willingness to engage in such work is thus crucial. The purpose of this study was to develop, and test the reliability and validity of, the Nurses' Willingness to Engage in Palliative Care Scale. The sample consisted of 224 Chinese nurses with a mean age of 32.36 (SD, 5.986) years. The critical ratio method was used for item analysis. Reliability was assessed by calculating Cronbach α. Content validity was assessed by calculating a content validity index based on ratings from 5 nursing experts. Structural validity was calculated by exploratory factor analysis. The developed scale consists of 20 items over 4 dimensions (attitude toward the behavior, subjective norms, perceived behavioral control, and behavioral intention) and has high content validity (0.97). The reliability of the scale was found to be sufficient (Cronbach α = .896). Four common factors were extracted from exploratory factor analysis, and the cumulative variance explained was 68.938%. The Nurses' Willingness to Engage in Palliative Care Scale has good reliability and validity and can be used to assess nurses' willingness to work in palliative care units.

show abstract

“…Electricity is the dominant energy consumed throughout the operation stage of CGATER. The power consumption by PPU is estimated as [ 25 ]

W = \frac{6 σ Q}{η D}

where σ is the surface tension of BF slag, Q is the slag flowrate, η is the energy efficiency of PPU (0.5% as suggested by Zhao et al [ 25 ] ), and D is average diameter of slag granules. The power demand for PPU was calculated to be 500 W. The power consumption by HRU can be easily determined according to the fan model at the given flowrate and pressure.…”

Section: Methodsmentioning

confidence: 99%

“…We did this by Zhao's method. [ 25 ]

R_{Max} = \frac{1}{ω} \sqrt{\frac{σ_{y}}{s ρ_{normala}}}

where R Max is the largest atomizer radius, σ y is the yield strength of the atomizer material, s is the safety factor, and ρ a is density of the atomizer material.…”

Section: Cgater Prototype At Commercial Scalementioning

confidence: 99%

Exploiting the Molten Slag to Decarbonize Iron and Steel Industry: Feasibility Analysis of Centrifugal Granulation‐Assisted Thermal Energy Recovery System beyond Pilot Scale

Wang

Zhu

et al. 2022

steel research int.

View full text Add to dashboard Cite

Waste heat recovery from molten blast furnace slag at ≈1500 °C represents new opportunities for slag valorization. This is now gaining the spotlight but still remains a grand challenge in the iron and steel industry (ISI). To address this issue, centrifugal granulation‐assisted thermal energy recovery (CGATER) is proposed and is regarded as the leading slag treatment technology. The CGATER provides a viable alternative to exploiting the waste heat in molten slag. Yet, large‐scale implementation of CGATER is little explored beyond laboratory‐scale tests. The fate of CGATER toward future commercialization is rarely considered and analyzed, either qualitatively or quantitatively. This work intends to provide, for the first time, a paradigm of a commercial‐scale CGATER prototype, which allows for slag treatment with a rated throughput of 36 t‐slag h−1. The feasibility of commercial‐scale CGATER with a comprehensive scrutinization of its energy, resource, and environment flows is analyzed. The CGATER prototype demonstrates attractive attributes of 1) being nearly water free and 2) suppressing sulfur‐related emissions, although with higher energy consumption than the water quenching method. This work provides not only an inclusive figure of CGATER design but also sheds light on the feasibility of CGATER commercialization to decarbonize ISI.

show abstract

Synergistic effects of Y and Nd on grain refinement of Mg-Y-Nd-Al alloy

Cited by 10 publications

References 38 publications

Effect of Solution Treatment Time on Microstructure Evolution and Properties of Mg-3Y-4Nd-2Al Alloy

Effect of Solution Treatment Time on Microstructure Evolution and Properties of Mg-3Y-4Nd-2Al Alloy

Development of the Nurses' Willingness to Engage in Palliative Care Scale

Exploiting the Molten Slag to Decarbonize Iron and Steel Industry: Feasibility Analysis of Centrifugal Granulation‐Assisted Thermal Energy Recovery System beyond Pilot Scale

Contact Info

Product

Resources

About