Nd:YAG Laser Beam Welding Invar36 Alloy

Dongjiang, 吴东江 Wu; Bo, 尹波 Yin; Weizhe, 张维哲 Zhang; Zhuji, 金洙吉 Jin

doi:10.3788/cjl20083511.1773

Cited by 4 publications

(2 citation statements)

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“…Laser welding has the advantages of energy concentration and narrow heat affected zone (HAZ), which is also used in Invar36 alloy welding. Wu et al [11, 12] conducted Nd:YAG laser butt welding of Invar36 alloy, and sound welds were produced. Zhao et al [1] performed Nd:YAG laser welding of 3-mm-thick Invar36 alloy, and the welds exhibited excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of Invar36 alloy joints using keyhole TIG welding

Yang

Liu

et al. 2020

Science and Technology of Welding and Joining

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Single-pass keyhole TIG welding (K-TIG) was used to weld 10-mm-thick Invar36 alloy plates without filler metal and groove preparation. The effects of joint gap, welding current, welding speed and arc length on the weld appearance, microstructure and mechanical properties were investigated. No phase transformation occurred in the weld where only austenite (γ -(Fe, Ni)) was formed, while the grain structure changed significantly. The maximum tensile strength of K-TIG weld was 440.7 MPa reaching 99.9% of the base metal and the maximum elongation was 31.5%. The microhardness in the weld zone was slightly lower than that of the base metal. The results suggested that K-TIG welding was a very promising method for the joining of middle-thick Invar36 alloy plates.

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Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of Invar36 alloy joints using keyhole TIG welding

Yang

Liu

et al. 2020

Science and Technology of Welding and Joining

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“…As a high power density welding process, laser welding (LW) has been commonly used in the processing of ferroalloys including Invar alloy [13][14][15] because of low heat input, narrow heat affected zone (HAZ) and high welding speed. 16 In Zhao's research, using a laser power of 2?5 kW and welding speed of 1?2 m min 21 , the UTS, the YS and the elongation of Invar 36 alloy LW were up to 85, 87 and 36 of the BM respectively.…”

Section: Introductionmentioning

confidence: 99%

Characterisation comparison of laser and laser–arc hybrid welding of Invar 36 alloy

Gao

Chen

et al. 2014

Science and Technology of Welding and Joining

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Laser and laser-arc hybrid welding are employed to join Invar 36 alloy. The microstructure, coefficient of thermal expansion (CTE) and mechanical properties of laser weld (LW) and hybrid weld (HW) are analysed and compared. The tensile test shows both LW and HW fractured in the weld metal, but the HW is stronger than the LW. Especially, the yield strength of HW is 362?8 MPa, 16?2% higher than that of LW. Both the CTE and Curie temperature of LW are almost the same with those of base material. The CTE of HW is higher than that of base material because the Ni content reduces and the content of other alloying elements increases. Moreover, the CTE of HW deviates from the theoretic curves of Fe-Ni alloy apparently. According to the theory of Invar effect, the deviation is attributed to the formation of new phase, FeCr 0?29 Ni 0?16 C 0?06 .

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Microstructure and property characteristics of thick Invar alloy plate joints using weave bead welding

Zhan

Liu

Wei

et al. 2017

Journal of Materials Processing Technology

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Nd:YAG Laser Beam Welding Invar36 Alloy

Cited by 4 publications

References 0 publications

Microstructure and mechanical properties of Invar36 alloy joints using keyhole TIG welding

Microstructure and mechanical properties of Invar36 alloy joints using keyhole TIG welding

Characterisation comparison of laser and laser–arc hybrid welding of Invar 36 alloy

Microstructure and property characteristics of thick Invar alloy plate joints using weave bead welding

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