Micro structure and mechanical properties of vacuum brazed martensitic stainless steel/tin bronze by Ag-based alloy

Zhang, W.W.; Cong, Shengyi; Huang, Yu Dong; Tian, Yanhong

doi:10.1016/j.jmatprotec.2017.05.018

Cited by 18 publications

(6 citation statements)

References 6 publications

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“…The reason is that the solidus and liquidus lines of the brazing filler were 1035 °C and 1080 °C, at this temperature, the brazing filler melts poorly, and the gas in the brazed seam cannot escape in time. Similar situations have been reported in Reference [ 43 ]. When the brazing temperature reached 1125 °C, the voids in the brazed seam disappeared.…”

Section: Resultssupporting

confidence: 91%

Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Chen

Chen²,

Yang³

et al. 2022

Materials

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The problem of stainless steel brazing is still the focus of scientific research. In this work, the Mn-based brazing filler was used to braze 1Cr18Ni9Ti and 1Cr21Ni5Ti stainless steel. The typical microstructure of the 1Cr18Ni9Ti/1Cr21Ni5Ti joint was analyzed in detail, and the interface structure of the joint was determined to be 1Cr18Ni9Ti/Mn(s, s)/1Cr21Ni5Ti. The brazing temperature and holding time were shown to have a great influence on the microstructure of the brazed joint. The tensile strength of brazed joints first increased and then decreased with the rising of the brazing temperature and the holding time. The maximum tensile strength was 566 MPa when the joints were brazed at 1125 °C for 15 min. The diffusion of Mn and Cr was an important factor affecting the quality of the joints. The diffusion distances of Mn and Cr at different brazing temperatures and holding times were measured, and the diffusion activation energy and diffusion coefficient were achieved by the Arrhenius equation.

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Section: Resultssupporting

confidence: 91%

Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Chen

Chen²,

Yang³

et al. 2022

Materials

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“…Previous studies indicated that Ag-based alloys with impressive mechanical properties and low melting point are among the common braze alloy used for obtaining the dissimilar joints of stainless steel and other alloys [16][17][18]. Compared with the vacuum brazing, due to a shorter elevated temperature residence time for EBB, the content of element diffusion from 72Ag-28Cu filler metal (Cusil) to base metals was lower.…”

Section: Introductionmentioning

confidence: 99%

Electron beam brazing of AISI 304 and copper dissimilar materials

Hodúlová

Sahul

et al. 2021

Weld World

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The aim of the paper is focusing on the brazeability of stainless steel AISI 304 and copper Cu-ETP (electrolytically tough pitch) dissimilar materials by electron beam. The thickness of base materials was 1 mm. Cusil eutectic brazing alloy (72Ag-28Cu, AWSBAg-8) in the form of thin foil was used as filler material. Overlapped joints were manufactured using defocused vertical electron beam. The effect of beam current on braze appearance, microstructure, and microhardness of brazed joints was investigated. The scanning electron microscopy indicated the possibility of obtaining defect-free joints. The results show that the binary Ag-Fe equilibrium diagram is expectedly the microstructure even at the moderate cooling and solidification rates expected under the used electron beam brazing conditions and parameters. Beam current is the main brazing parameter influencing the joint quality. Optimum brazing parameters were as follows: beam current 6 mA, brazing speed of 5 mm/s, and 50 passes at constant accelerating voltage (U = 55 kV), focusing current (I f = 990 mA) across the upper material length-Cu.

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“…Muitas vezes, estes processos incluem a brasagem propriamente dita em um estágio e, logo após, ainda dentro do forno, é feito o tratamento térmico dos materiais base. Desta maneira, se executa em forno a vácuo a brasagem e têmpera de aços inox martensíticos no mesmo ciclo de aquecimento [2][3][4][5][6].…”

Section: Introductionunclassified

“…Mesmo processos conduzidos a menores temperaturas -da ordem de 500 °C -podem gerar a formação dos danosos compostos intermetálicos frágeis. Por exemplo, a formação de nitretos de ferro (FeN3) em aço inox martensítico durante brasagem em forno a vácuo, conforme estudos já realizados [4].…”

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Brasagem de Aços Inoxidáveis Martensíticos Utilizando Pasta à Base de Níquel em Forno a Vácuo

Carvalho

Machado

2020

Soldag. insp.

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Resumo: Aços inoxidáveis martensíticos são largamente utilizados pela indústria cuteleira, especialmente para produtos que tem contato com alimento. Nesta aplicação algumas propriedades são importantes, como resistência à corrosão, tenacidade e retenção do fio – esta última fortemente influenciada pela limpeza do aço. No entanto, aços com tais propriedades tendem a ser caros e possuem baixa soldabilidade. O objetivo deste trabalho é desenvolver a união por brasagem entre os aços inoxidáveis martensíticos Uddeholm Elmax e DIN EN 1.4110, a fim de usar o Uddeholm Elmax apenas na região do fio, reduzindo custos. Uma pasta classificada como DIN EN ISO 3677 B-Ni60CrPSi-980/1040 foi utilizada como metal de adição. Os parâmetros testados foram: tempo de brasagem (5, 10 e 30 min) e temperatura de brasagem (1080, 1100 e 1120 °C). Os corpos de prova foram submetidos a ensaio de tração e analisados por microscópio óptico e MEV, além de medições de dureza e microdureza. Os maiores valores para o ensaio de tração foram encontrados nas amostras brasadas com tempo de 10 min e temperatura de 1120 °C. Foi possível brasar os materiais de acordo com o objetivo deste trabalho.

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Micro structure and mechanical properties of vacuum brazed martensitic stainless steel/tin bronze by Ag-based alloy

Cited by 18 publications

References 6 publications

Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Electron beam brazing of AISI 304 and copper dissimilar materials

Brasagem de Aços Inoxidáveis Martensíticos Utilizando Pasta à Base de Níquel em Forno a Vácuo

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