Microstructural characterization of laser beam and gas tungsten arc welded zirconium-2.5Nb

Mahlalela, S. S.; Pistorius, P. G. H.

doi:10.17159/2411-9717/2017/v117n10a4

Cited by 13 publications

(3 citation statements)

References 6 publications

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“…The results of the small tensile specimen testing confirm that the strengths of the WZ and HAZ are higher than that of the BM, which well explains the joint tensile test fracture at the BM in Figure 11. Coarse grains and fine acicular α ′ phases increase the strength of the joint, but reduce the plasticity of the joint [35,36]. Impact property of Zr-Sn-Nb joint and BM were conducted.…”

Section: Tensile Properties Of Different Regions Of Whole Jointmentioning

confidence: 99%

Study of Microstructure and Performance Evaluation of Zr-Sn-Nb Joints by Electron Beam Welding

Zhao,

Zhang,

Yue

et al. 2024

Materials

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In this work, Zr-Sn-Nb alloy was joined by electron beam welding (EBW). A defect-free Zr-Sn-Nb joint with sound appearance was obtained. The grains in the weld zone (WZ) and heat-affected zone (HAZ) are significantly coarsened. The columnar grains with a maximum grain size of 0.5 mm are distributed in the upper region of the WZ, while the equiaxed grains are almost located in the bottom region of the WZ. The WZ is mainly composed of the dominant α-Zr, α′-Zr and a few β phases. The grain orientation of WZ and HAZ is uniform, indicating that no obvious preferred orientation existed. Coarse grains and fine acicular α′ phases increase the strength of the joint, but reduce the plasticity and toughness of the joint. The tensile strengths of the joints at room temperature (RT) and 375 °C were 438 MPa and 313 MPa, respectively. The RT impact energy of the joint is 18.5 J, which is only 58.3% of the BM. The high purity of the EBW process and unsignificant grain orientation minimizes damage to the corrosion resistance of Zr-Sn-Nb alloy joints. The corrosion weight gain of the joint specimen and the BM specimen were 12.91 mg/dm2 and 12.64 mg/dm2, respectively, and the thicknesses of the cross-section corrosion layer were 12–15 μm and 9–12 μm, respectively.

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Section: Tensile Properties Of Different Regions Of Whole Jointmentioning

confidence: 99%

Study of Microstructure and Performance Evaluation of Zr-Sn-Nb Joints by Electron Beam Welding

Zhao,

Zhang,

Yue

et al. 2024

Materials

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“…Due to differences in the values of heat input and properties of electrode materials, surfacing processes have a specific effect on the properties of coatings [5][6][7][8][9][10][11][12][13][14][15]. In paper [5], a study of the effect of adding copper to a metal under an ultrapure titanium atmosphere was conducted.…”

Section: Introductionmentioning

confidence: 99%

“…In paper [11], the microstructure of the Zr-2.5Nb alloy obtained as a result of surfacing with different combinations of the heat supply rates was investigated. The influence of the obtained microstructure on the mechanical properties of the substance was determined.…”

Section: Introductionmentioning

confidence: 99%

The Structure and Properties of Hardening Coatings of Low-Chromium Hard Alloys for Agricultural Machine Parts

Ишков

Polkovnikova

Ivanaisky

2022

KEM

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A new surfacing material consisting of the Fe-Si-Cr-Cu-C-B system sparingly alloyed with chromium is proposed for agricultural machine parts hardening by induction surfacing method capable to replace the currently widely used materials like Sormite No. 1, 2, PG-US25/27 and those similar to them. The chromium content in the new material is 4.3 %, which is 3-8 times less than that in analogs. The new material was obtained metallurgically, its phase, chemical composition and properties were investigated. The main phase of the alloy is Ferrosilide FeSin, along the grain boundaries of which a carbide phase is precipitated represented by small particles of Cr2C3, Cr7C3 carbides of regular and acicular shapes, as well as large particles of special chromium carbides (Cr,Fe)7C3, (Cr,Fe)23C6. In terms of the relative content, the carbides present in the new material can be conventionally arranged in the following series: (Cr,Fe)23C6 > (Cr,Fe)7C3 > Cr7C3 > Cr2C3.

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Investigating Induction-Surfacing Processes for Hardening Steel Parts

Ишков

Voinash²,

Sokolova

et al. 2022

Metallurgist

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Microstructural characterization of laser beam and gas tungsten arc welded zirconium-2.5Nb

Cited by 13 publications

References 6 publications

Study of Microstructure and Performance Evaluation of Zr-Sn-Nb Joints by Electron Beam Welding

Study of Microstructure and Performance Evaluation of Zr-Sn-Nb Joints by Electron Beam Welding

The Structure and Properties of Hardening Coatings of Low-Chromium Hard Alloys for Agricultural Machine Parts

Investigating Induction-Surfacing Processes for Hardening Steel Parts

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