Characterizations on the microstructure and micro-mechanics of cast Be-Al-0.4Sc-0.4Zr alloy prepared by vacuum induction melting

Yu, Liangbo; Wang, Wenyuan; Su, Bin; Wang, Zhenhong; Qu, Fengsheng; Wu, Haoxi; Pu, Zhen; Meng, Xianqin; Wang, Qinguo; Wang, Jing; Lai, Xinchun

doi:10.1016/j.msea.2018.12.027

Cited by 16 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resultant load-depth curves were used to obtain the H and E r by employing the procedure of Oliver and Pharr [ 36 ]. The E r was then used, together with Poisson’s ratio ( ν ), to calculate the elastic modulus ( E ) from the following equation:

where E i is the elastic modulus of the indenter (1140 GPa) and ν i is its Poisson’s ratio (0.07) [ 37 ]. Furthermore, the Poisson’s ratio used for the Inconel 625 alloy was set to 0.303 [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

The Interface Microstructures and Mechanical Properties of Laser Additive Repaired Inconel 625 Alloy

Wei¹,

Le²,

Xu³

et al. 2020

Materials

Self Cite

View full text Add to dashboard Cite

The microstructure and micro-mechanics around the repaired interface, and the tensile properties of laser additive repaired (LARed) Inconel 625 alloy were investigated. The results showed that the microstructure around the repaired interface was divided into three zones: the substrate zone (SZ), the heat-affected zone (HAZ), and the repaired zone (RZ). The microstructure of the SZ had a typical equiaxed crystal structure, displaying simultaneously precipitated block-shaped MC-type carbides (NbC, TiC), with bimodal sizes of approximately 10 μm and 0.5 μm and an irregularly shaped flocculent Laves phase. Recrystallization occurred in the HAZ, and led to significant grain growth; a portion of the second phase dissolved in the original grain boundaries. In the RZ, there was a columnar crystal structure, and the size increased with increasing deposition thickness. Moreover, the microstructure between the layer interface and layer interior was quite different, presenting an overlapping transition zone (OTZ), in which the dendritic structure coarsened and more Laves phase were precipitated, compared to in the layer interior. The hardness and tensile properties of the LARed samples were equivalent to those of the wrought substrate, which indicates that laser additive repairing (LAR) is a reliable repair solution for damaged and mis-machined components comprising Inconel 625 alloy.

show abstract

Section: Resultsmentioning

confidence: 99%

“…where E i is the elastic modulus of the indenter (1140 GPa) and ν i is its Poisson's ratio (0.07) [37]. Furthermore, the Poisson's ratio used for the Inconel 625 alloy was set to 0.303 [38].…”

Section: Hardnessmentioning

confidence: 99%

The Interface Microstructures and Mechanical Properties of Laser Additive Repaired Inconel 625 Alloy

Wei¹,

Le²,

Xu³

et al. 2020

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Adding alloying elements to the aluminum matrix is an effective way to obtain a uniform and refined microstructure, while helping to improve the interfacial strength between beryllium and aluminum, such as adding Mg, Si, Ag, Ge, Ni, Sc, Zr, etc. [ 13 , 14 , 15 , 16 ] At the same time, our previous work shows that in addition to powder metallurgy, precision casting, laser melting, and other preparation methods [ 17 , 18 , 19 , 20 ], the self-exhaust pressure infiltration technique has been successfully verified as an effective method to prepare high-strength Be/Al composites with good interfacial bonding [ 21 ]. Therefore, we selected two kinds of beryllium powders with different morphologies produced by different processes as reinforcements to prepare qualified beryllium/aluminum composites by the pressure infiltration method.…”

Section: Introductionmentioning

confidence: 99%

Effect of Interfacial Strength on Mechanical Behavior of Be/2024Al Composites by Pressure Infiltration

et al. 2023

View full text Add to dashboard Cite

In this paper, two kinds of Be/2024Al composites were prepared by the pressure infiltration method using two different beryllium powders as reinforcements and 2024Al as a matrix. The effect of interfacial strength on the mechanical behavior of Be/2024Al composites was studied. Firstly, the microstructure and mechanical properties of the two composites were characterized, and then the finite element analysis (FEA) simulation was used to further illustrate the influence of interfacial strength on the mechanical properties of the two Be/2024Al composites. The mechanical tensile test results show that the tensile strength and elongation of the beryllium/2024Al composite prepared by the blocky impact grinding beryllium powder (blocky-Be/2024Al composite) are 405 MPa and 1.58%, respectively, which is superior to that of the beryllium/2024Al composite prepared by the spherical atomization beryllium powder (spherical-Be/2024Al composite), as its strength and elongation are 331 MPa and 0.38%, respectively. Meanwhile, the fracture of the former shows brittle fracture of beryllium particles and ductile fracture of aluminum, while the latter shows interface debonding. Further FEA simulation illustrates that the interfacial strength of the blocky-Be/2024Al composite is 600 MPa, which is higher than that of the spherical-Be/2024Al composite (330 MPa). Therefore, it can be concluded that the better mechanical properties of the blocky-Be/2024Al composite contribute to its stronger beryllium/aluminum interfacial strength, and the better interfacial strength might be due to the rough surface and microcrack morphology of blocky beryllium particles. These research results provide effective experimental and simulation support for the selection of beryllium powder and the design and preparation of high-performance beryllium/aluminum composites.

show abstract

The Effects of Sc Addition on the Microstructure and Mechanical Properties of Be-Al Alloy Fabricated by Induction Melting

Wang

et al. 2019

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Characterizations on the microstructure and micro-mechanics of cast Be-Al-0.4Sc-0.4Zr alloy prepared by vacuum induction melting

Cited by 16 publications

References 37 publications

The Interface Microstructures and Mechanical Properties of Laser Additive Repaired Inconel 625 Alloy

The Interface Microstructures and Mechanical Properties of Laser Additive Repaired Inconel 625 Alloy

Effect of Interfacial Strength on Mechanical Behavior of Be/2024Al Composites by Pressure Infiltration

The Effects of Sc Addition on the Microstructure and Mechanical Properties of Be-Al Alloy Fabricated by Induction Melting

Contact Info

Product

Resources

About