An investigation on microstructure and properties of dissimilar welded Inconel 625 and SUS 304 using high-power CO2 laser

Li, Gang; Huang, Jian; Wu, Yixiong

doi:10.1007/s00170-014-6349-7

Cited by 52 publications

(16 citation statements)

References 22 publications

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“…Figure 4a shows one of the five performed tensile stress-strain curves of Inconel 625 alloy. The inset gives comparison results of the tensile test for Inconel 625 samples in the present work and literatures [25][26][27][28][29][30][31]. Apparently, the tensile strength of different processing samples are not identical.…”

Section: Tensile Testsmentioning

confidence: 62%

Superior Mechanical Behavior and Fretting Wear Resistance of 3D-Printed Inconel 625 Superalloy

Gao¹,

Zhou

2018

Applied Sciences

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Additive manufacturing (AM) nickel-based superalloys have been demonstrated to equate or exceed mechanical properties of cast and wrought counterparts but their tribological potentials have not been fully realized. This study investigates fretting wear behaviors of Inconel 625 against the 42 CrMo4 stainless steel under flat-on-flat contacts. Inconel 625 is prepared by additive manufacturing (AM) using the electron beam selective melting. Results show that it has a high hardness (335 HV), superior tensile strength (952 MPa) and yield strength (793 MPa). Tribological tests indicate that the AM-Inconel 625 can suppress wear of the surface within a depth of only ~2.4 μm at a contact load of 106 N after 2 × 104 cycles. The excellent wear resistance is attributed to the improved strength and the formation of continuous tribo-layers containing a mixture of Fe2O3, Fe3O4, Cr2O3 and Mn2O3.

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Section: Tensile Testsmentioning

confidence: 62%

Superior Mechanical Behavior and Fretting Wear Resistance of 3D-Printed Inconel 625 Superalloy

Gao¹,

Zhou

2018

Applied Sciences

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“…This lower energy absorption is attributed to the segregation of niobium at the grain boundaries and formation of niobium carbide as revealed from EDS analysis. Li et al 1 reported that toughness of the welded joints is closely related to microstructure which is attributed to inhomogeneity in the fusion zone and niobium and molybdenum segregation in the interdendritic regions. Investigations reveal that Laves phase presents harmful effects to the strength of the joint.…”

Section: Resultsmentioning

confidence: 99%

“…Xu et al 7 studied the pulsed plasma arc welding of Inconel-625 alloy and reported the occurrence of Laves phase, NbC/TiC phase and Ni–Nb phase in Ni matrix. Li et al 1 performed dissimilar welding of Inconel-625 alloy with SUS304 using CO 2 welding. Formation of Laves phase was observed at the grain boundaries and in the interdendritic regions of fusion zone due to segregation of Nb that reduced the tensile strength as well as toughness of the welded joint.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of Inconel-625 welded joint developed through microwave hybrid heating

Badiger

Narendranath

Srinath³

2017

Proceedings of the Institution of Mechanical Engineers, Part B:

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Application of microwave energy for processing of bulk metals is effectively utilized to join Inconel-625 plates through hybrid heating technique using Inconel-625 powder as an interface filler material. Post welding characterization of microwave developed joints through X-ray diffraction shows the development of carbides of niobium and chromium as well as intermetallic phases along with the primary γ-phase face-centered cubic matrix. Microstructural examination reveals the formation of Laves phase along the grain boundaries in the fusion zone. Microwave-induced joints exhibit average microhardness of 245 ± 20 HV and 0.7% porosity in the fusion zone. Average ultimate tensile strength and flexural strength of the developed joints were estimated at 375 and 377 MPa respectively. Average impact toughness of microwave-induced joints is observed to be 18 J.

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“…In this work, the investigations of the transition zone were primarily carried out by transmission electron microscopy (TEM) on thin foils prepared by FIB (Focus Ion Beam). Though the microstructure of the transition zone between Inconel 625 overlaid on steel has been already described in the literature [3][4][5][6][11][12][13][14][15], those investigations pertained to Inconel 625 coatings produced by arc welding methods like gas metal arc welding (GMAW). There are no thorough studies concerning microstructure and chemical composition of a transition zone in weld overlay coating produced by CMT.…”

Section: Introductionmentioning

confidence: 99%

TEM Microstructure and Chemical Composition of Transition Zone Between Steel Tube and An Inconel 625 Weld Overlay Coating Produced by CMT Method

Rozmus-Górnikowska

Blicharski

2017

Archives of Metallurgy and Materials

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The aim of this work was to investigate the microstructure and chemical composition of the transition zone between 16Mo3 steel and Inconel 625 weld overlay coating produced by the Cold Metal Transfer (CMT) method. Investigations were primarily carried out through transmission electron microscopy (TEM) on thin foils prepared by FIB (Focus Ion Beam).The chemical analysis demonstrated that the amount of certain elements (Fe, Ni, Cr, Mo, Nb) in the transition zone between the base material and the weld overlay changes quickly, from the composition of the steel to the composition of the composite zone. STEM and TEM investigations revealed that two areas are clearly visible in the transition zone. In the narrow band close to the fusion boundary where plates are clearly visible and the M s temperature is higher than room temperature, electron diffraction analyses show reflections of martensite and austenite. Moreover, the crystallographic relations between martensite and austenite can be described by the Kurdjumov-The microstructure of the part of the transition zone with an M s temperature lower than room temperature as well as that of the composite zone is austenite. The investigations proved that the width of the martensitic area can be significantly limited by using the CMT technique for weld overlaying.

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An investigation on microstructure and properties of dissimilar welded Inconel 625 and SUS 304 using high-power CO2 laser

Cited by 52 publications

References 22 publications

Superior Mechanical Behavior and Fretting Wear Resistance of 3D-Printed Inconel 625 Superalloy

Superior Mechanical Behavior and Fretting Wear Resistance of 3D-Printed Inconel 625 Superalloy

Microstructure and mechanical properties of Inconel-625 welded joint developed through microwave hybrid heating

TEM Microstructure and Chemical Composition of Transition Zone Between Steel Tube and An Inconel 625 Weld Overlay Coating Produced by CMT Method

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