The effects of Mn and Nb on the microstructure and mechanical properties of Alloy 152 welds

Jeng, Sheng-Long; Lee, Hwa-Teng; Kuo, Tsung-Yuan; Tsai, Kun Chao; Chung, Chia Lin; Huang, Jeng‐Yi

doi:10.1016/j.matdes.2015.08.100

Cited by 23 publications

(3 citation statements)

References 14 publications

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“…Comparing the slag compositions, the slag detachability was best at CaO:CaF 2 :SiO 2 = 1.7:1.8:1, and worst at CaO:CaF 2 :SiO 2 = 1.3:0.9:1. Jeng et al [12] investigated the effects of Mn and Nb on the microstructure and mechanical properties of ENiCrFe-7 weld metal. The base metal consisted of Alloy 690 and SUS 304 L. They found that an increase in Mn could induce finer grains and smaller Nb-rich phases in the weld, the elongation of weld metal increased and the hardness decreased at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Investigating the microstructure and mechanical properties of deposited metal with ENiCrFe-7 covered electrode

Zhu,

Yu,

Liu

et al. 2023

Mater. Res. Express

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The effect of post weld heat treatment (PWHT) on microstructure and mechanical properties of deposited metal using ENiCrFe-7 covered electrode was investigated. The PWHT was conducted at 615°C for 24 h. The results showed that three types of precipitates existed in both as-welded and PWHT deposited metals, i.e, NbC carbides, Al-Ti oxides in grains, and M23C6 carbides on grain boundaries. The M23C6 carbides coarsened after PWHT. The room temperature and elevated temperature (350°C) tensile strength decreased by about 30 MPa, and elongation increased by about 3-4% after PWHT. The tensile specimens presented ductile fracture feature and the dimples in PWHT condition were larger than that in as-welded condition. The hardness of deposited metal in as-welded condition was higher than that of PWHT condition. The impact toughness showed no significant change after PWHT. Both as-welded and PWHT impact specimens showed a mixed fracture mode with dominant ductile fracture and cleavage fracture.

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Section: Introductionmentioning

confidence: 99%

Investigating the microstructure and mechanical properties of deposited metal with ENiCrFe-7 covered electrode

Zhu,

Yu,

Liu

et al. 2023

Mater. Res. Express

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“…Vishwakarma et al [ 19 ] reported that elements S, P, and C present in filler metal mainly induce the hot cracking in the weld metal and deteriorate the mechanical performance of the welded joint during service temperature. Another study identified the primary cause of hot cracking as the constitutional liquation between the carbide particle/Laves phase and the Ni-rich austenitic matrix [ 20 ]. Sometimes the residual stresses developed in the weld metal and at the interface as a result of multi-pass cycling or mismatch of CTE also act as a source of hot cracking [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

P92 steel and inconel 617 alloy welds joint produced using ERNiCr-3 filler with GTAW process: Solidification mechanism, microstructure, mechanical properties and residual stresses

Kumar,

Pandey,

Sirohi

et al. 2023

Heliyon

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“…micrographs), 2 the analysis of a welded material microstructure is able to reveal important information about its mechanical properties. [3][4][5][6][7][8][9][10] The American Society for Testing and Materials (ASTM) produces industrially recognized standards for the analysis of microstructure evaluated by human experts. However, implementing these standards is labor intensive and prone to human error, especially quantitatively.…”

Section: Introductionmentioning

confidence: 99%

An enhanced method for the identification of ferritic morphologies in welded fusion zones based on gray-level co-occurrence matrix: A computational intelligence approach

Souza

Silva

Caldeira

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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This work focuses on the identification of five of the most common ferritic morphologies present in welded fusion zones of low carbon steel through images acquired by photomicrographies. With this regards, we discuss the importance of the gray-level co-occurrence matrix to extract the features to be used as the input of the computational intelligence techniques. We use artificial neural networks and support vector machines to identify the proportions of each morphology and present the error identification rate for each technique. The results show that the use of gray-level co-occurrence extraction allows a less intense computational model with statistical validity and the support vector machine as a computational intelligence technique allows smaller variability when compared to the artificial neural networks.

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The effects of Mn and Nb on the microstructure and mechanical properties of Alloy 152 welds

Cited by 23 publications

References 14 publications

Investigating the microstructure and mechanical properties of deposited metal with ENiCrFe-7 covered electrode

Investigating the microstructure and mechanical properties of deposited metal with ENiCrFe-7 covered electrode

P92 steel and inconel 617 alloy welds joint produced using ERNiCr-3 filler with GTAW process: Solidification mechanism, microstructure, mechanical properties and residual stresses

An enhanced method for the identification of ferritic morphologies in welded fusion zones based on gray-level co-occurrence matrix: A computational intelligence approach

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