Study on element diffusion behaviour of vacuum-furnace brazing 316 L/BNi-2 joints based on Boltzmann-Matano model

Investigation of the Element Diffusion in Friction Welded X53CrMnNiN219 and X45CrSi93 Steels

Materials Testing ◽

10.3139/120.110568 ◽

2014 ◽

Vol 56 (4) ◽

pp. 318-324

Author(s):

Mehmet Uzkut ◽

Bekir Sadık Ünlü ◽

Mesut Yavuz ◽

Mustafa Akdag

Keyword(s):

Element Diffusion

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CABOT TANTALUM

Alloy Digest ◽

10.31399/asm.ad.ta0011 ◽

1989 ◽

Vol 38 (2) ◽

Keyword(s):

Chemical Process ◽

Heat Treating ◽

Electronics Industry ◽

Process Equipment ◽

Vacuum Furnace ◽

Alloying Element ◽

High Melting Point ◽

Prosthetic Devices ◽

Cabot Corporation ◽

Chemical Process Equipment

Abstract Tantalum finds its largest use in the electronics industry, where it is used in filaments, filament supports, and capacitors. Metallurgical grade tantalum is used extensively in chemical process equipment. Tantalum resists corrosion by body fluids and is used in prosthetic devices. Its high melting point gives it utility in vacuum furnace components. It is also used as an alloying element in superalloys. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ta-11. Producer or source: Cabot Corporation.

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THE INTERFACIAL THERMAL STABILITY AND ELEMENT DIFFUSION MECHANISM OF SiCf/TC17 COMPOSITE

ACTA METALLURGICA SINICA ◽

10.3724/sp.j.1037.2012.00347 ◽

2012 ◽

Vol 48 (11) ◽

pp. 1306 ◽

Cited By ~ 1

Author(s):

Xu ZHANG ◽

Yumin WANG ◽

Jiafeng LEI ◽

Rui YANG

Keyword(s):

Thermal Stability ◽

Diffusion Mechanism ◽

Element Diffusion

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Induction Brazing for Rapid Localized Repair of Inconel 718

Metals ◽

10.3390/met11071096 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1096

Author(s):

Aprilia Aprilia ◽

Jin Lee Tan ◽

Yongjing Yang ◽

Sung Chyn Tan ◽

Wei Zhou

Keyword(s):

Adverse Effects ◽

Grain Growth ◽

Inconel 718 ◽

Vacuum Furnace ◽

Slow Process ◽

Prolonged Heating ◽

Induction Brazing ◽

Heating And Cooling ◽

Short Period ◽

Different Temperatures

Vacuum furnace has been used for brazing repair of aerospace components, but it is a slow process which typically takes a few hours. The prolonged heating and cooling cycles could cause some adverse effects on the components such as excessive grain growth. A rapid brazing technique using induction coil was studied to evaluate its suitability for localized repair. Induction brazing of Inconel 718 was carried out using AMS 4777 brazing paste at different temperatures (950 °C, 1050 °C and 1150 °C ) for various durations (2 min, 10 min and 20 min). Microstructure and microhardness were evaluated. The experimental results show that brazing at 1050 °C leads to desirable microstructures in a short period of merely 2 min. The study demonstrates the potential application of induction brazing for rapid localized aerospace repair.

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Multipurpose vacuum furnace with induction electron beam and resistance heating

Vacuum ◽

10.1016/0042-207x(67)90804-4 ◽

1967 ◽

Vol 17 (7) ◽

pp. 428

Keyword(s):

Electron Beam ◽

Vacuum Furnace ◽

Resistance Heating

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Changes in Microstructure of Biomedical Co-Cr-Mo-C Alloys with Solution Treating and Aging

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.89-91.377 ◽

2010 ◽

Vol 89-91 ◽

pp. 377-382 ◽

Cited By ~ 2

Author(s):

S. Mineta ◽

Shigenobu Namba ◽

Takashi Yoneda ◽

Kyosuke Ueda ◽

Takayuki Narushima

Keyword(s):

Solution Treatment ◽

Heating Time ◽

Treatment Temperature ◽

Vacuum Furnace ◽

Solution Treatment Temperature ◽

Precipitate Dissolution ◽

Heat Treated ◽

M23c6 Type ◽

Type Carbide ◽

Time Required

Microstructural changes occurring in biomedical Co-Cr-Mo alloys with three carbon levels due to solution treatment and aging were investigated. Ingots of Co-Cr-Mo alloys with three different carbon levels were prepared by vacuum furnace melting; their chemical composition was Co-28Cr-6Mo-xC (x = 0.12, 0.25 and 0.35 mass%). Precipitates were electrolytically extracted from as-cast and heat-treated alloys. An M23C6 type carbide and a phase were detected as precipitates in as-cast Co-28Cr-6Mo-0.12C alloy, and an M23C6 type carbide and an  phase (M6C-M12C type carbide) were detected in as-cast Co-28Cr-6Mo-0.25C and Co-28Cr-6Mo-0.35C alloys. Only the M23C6 type carbide was detected during solution treatment. Complete precipitate dissolution occurred in all the three alloys after solution treatment. The holding time required for complete precipitate dissolution increased with increasing carbon content and decreasing solution treatment temperature. Complete precipitate dissolution occurred in the Co-Cr-Mo-C alloys solution treated at 1523 K for 43.2 ks; they were then subjected to aging from 873 to 1473 K for a heating time up to 44.1 ks after complete precipitate dissolution in solution treatment at 1523 K for 43.2 ks. The M23C6 type carbide with a grain size of 0.1–3 m was observed after aging. A time-temperature-precipitation diagram of the M23C6 type carbide formed in the Co-28Cr-6Mo-0.25C alloy was plotted.

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