Effect of location on microstructure and mechanical properties of additive layer manufactured Inconel 625 using gas tungsten arc welding

Wang, Jianfeng; Sun, Qingjie; Wang, H.; Liu, J.P.; Feng, Jicai

doi:10.1016/j.msea.2016.09.015

Cited by 220 publications

(77 citation statements)

References 46 publications

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“…The result is similar to the previous studies [23]. Only three peaks including 111 γ , 200 γ and 220 γ are detected and this reveals the pattern of the columnar dendritic growth [24].…”

Section: Xrd Analysessupporting

confidence: 91%

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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“…The result is similar to the previous studies [23]. Only three peaks including 111 γ , 200 γ and 220 γ are detected and this reveals the pattern of the columnar dendritic growth [24].…”

Section: Xrd Analysessupporting

confidence: 91%

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

Gao¹,

Zhou

2018

Applied Sciences

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“…The comparison of tensile properties between the H and V direction was investigated. Considering the heterogeneous mechanical properties within the fabricated component [27], five specimens were machined in different horizontal regions to reveal the effects of location on the tensile properties (as shown in Figure 1c). In addition, a reference cast NAB sample, which was close to the composition of the welding wire, was used to test the tensile properties.…”

Section: Characterization Of Microstructure and Propertiesmentioning

confidence: 99%

Effect of Ultrasonic Vibration and Interpass Temperature on Microstructure and Mechanical Properties of Cu-8Al-2Ni-2Fe-2Mn Alloy Fabricated by Wire Arc Additive Manufacturing

Chen

Zhang

et al. 2020

Metals

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A novel ultrasonic vibration assisted (UVA) wire arc additive manufacturing (WAAM) was used to fabricate Cu-8Al-2Ni-2Fe-2Mn alloy in this study. The effect of different interpass temperatures with and without ultrasonic vibration on the microstructural evolution and mechanical properties of the fabricated part were investigated by optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), nanoindentation, and mechanical tensile testing. The results showed that reduction of the interpass temperature without UVA treatment cannot prevent the columnar dendrites directionally growing along the deposition direction. Under the UVA treatment, the coarse columnar dendrites were broken at the interpass temperature of 400 °C, and formed a fine cellular structure with an interpass temperature of 100 °C, owing to the acoustic streaming effect and cavitation effect. In addition, globular κII phase was based on Fe3Al and lamellar κIII phase was based on NiAl distributed in the interdendritic region, whereas κIV phase (rich-Fe) were precipitated in the α-Cu matrix. The improvement of microstructural characteristics caused by UVA treatment further improved the tensile properties and nano-hardness of WAAM fabricated parts. Eventually, it is experimentally demonstrated that WAAM fabricated Cu-8Al-2Ni-2Mn-2Fe alloy can obtain high-performance at UVA process under an interpass temperature of 100 °C.

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“…As Figuras 6 e 7 ilustram a microestrutura das multicamadas na condição como depositada. Se observa uma estrutura de solidificação de dendritas de austenita a base de Ni (γ-Ni) com orientação cristalográfica determinada pela a direção do escoamento do calor durante a deposição [9]. Esta direção preferencial de solidificação da estrutura é oposta ao sentido do fluxo de calor em função do gradiente máximo de temperatura.…”

Section: Caracterização Microestruturalunclassified

Caracterização de Multicamadas de IN625 Depositadas por CMT

2018

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Resumo A manufatura aditiva é um processo utilizado na construção de peças com complexidade geométrica e no reparo de componentes mecânicos com alto valor agregado sendo portanto atrativa quando se utilizam materiais de elevado custo haja vista a menor necessidade de subtração de material. Nesse processo de deposição de multicamadas seguindo um modelo digital são produzidas estruturas mecânicas 3D. O sucesso de cada procedimento depende dos parâmetros de processamento, que incluem técnica de deposição, parâmetros, liga a ser depositada e condições da deposição. Controlar o efeito destes parâmetros nas propriedades é determinante para beneficiar o curto tempo de desenvolvimento do projeto na produção de peças. Neste contexto, diversos estudos têm sido desenvolvidos avaliando o efeito das multicamadas nas características dos componentes. Este trabalho vem contribuir para este tema após o processamento de multicamadas de uma liga a base de Ni (IN625) pelo processo MIG/MAG - CMT (Cold Metal Transfer). Amostras (paredes) de 15 cm de altura foram obtidas pela sobreposição de cordões e caracterizadas na condição como-depositada e após tratamento térmico de homogeneização. A influência da sobreposição das camadas na microestrutura e propriedades mecânicas foi avaliada por meio de medidas de dureza e ensaios de tração. O efeito dos múltiplos ciclos térmicos na microestrutura e nas propriedades mecânicas antes e após tratamento térmico foi também avaliado. Resultados mostraram que o tratamento térmico minimizou as heterogeneidades da microestrutura com multicamadas promovendo um aumento na resistência mecânica, porém, com queda da ductilidade quando comparado à amostra na condição como processada. A análise da região da fratura dos corpos-de-prova tracionados contribuiu para um melhor entendimento do efeito da deposição de multicamadas e posterior tratamento térmico.

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Effect of location on microstructure and mechanical properties of additive layer manufactured Inconel 625 using gas tungsten arc welding

Cited by 220 publications

References 46 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

Effect of Ultrasonic Vibration and Interpass Temperature on Microstructure and Mechanical Properties of Cu-8Al-2Ni-2Fe-2Mn Alloy Fabricated by Wire Arc Additive Manufacturing

Caracterização de Multicamadas de IN625 Depositadas por CMT

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