High Temperature Stability of Dissimilar Metal Joints in Fission Surface Power Systems

Locci, Ivan E.; Nesbitt, James A.; Ritzert, Frank J.; Bowman, Cheryl L.

doi:10.1063/1.2437505

Cited by 6 publications

(6 citation statements)

References 2 publications

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“…On heating, the interlayer melts and the interlayer element (or a constituent of an alloy interlayer) diffuses into substrate materials, causing isothermal solidification. The result of this process is a bond that has a higher melting point than the bonding temperature [2][3]. One of the most important dissimilar joints is dissimilar joining of stainless steel to Ni-base super alloys.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Characterization Study in the IN718/BNi-2/316L Joint by Transient Liquid Phase Bonding Process

Salmaliyan

2019

Adv. Mater. Lett.

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In this research, the relationship among TLP bonding microstructures, mechanical properties and fracture mechanism of IN 718 / BNi-2 /AISI 316L joint was studied. In the first step, by changing TLP variables e.g. time and bonding temperature in the range 30-60 min and 950-1050 0 C respectively, characteristics of each type of microstructures including formation of destructive phases and homogeneity of microstructures were studied. In the second step, in order to investigate the mechanical properties and their fracture surface morphology, hardness and shear tests were accomplished. In the next stage, based on diffusion behavior of alloying elements, the relationship among microstructure, mechanical properties and fracture mechanism was studied. Results show that microstructures of bonding region were classified in three types. Type I: solid state bonding microstructure, Type II: Athermalisothermal solidification microstructure, and Type III: isothermal solidification microstructure. It was observed that for each specific microstructure, there is one fracture mechanism or there are more that are dimples fracture resulting from precipitations within matrix, quasi-cleavage fracture resulting from dual microstructure of eutecticisothermal solidification and dimple-tearing fracture resulting from tiny precipitations within bonding region.

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Section: Introductionmentioning

confidence: 99%

“…Dissimilar weldments of SS-316L and IN718 alloy have been widely used in many engineering applications such as chemical processing equipment, aerospace engine components, power plants, and oil and gas industries. One of the most common applications of this dissimilar bonding is in stirling engine [3][4].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Characterization Study in the IN718/BNi-2/316L Joint by Transient Liquid Phase Bonding Process

Salmaliyan

2019

Adv. Mater. Lett.

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“…In718 nickel alloy maintains high strength at a high temperature, and 316 l stainless steel has excellent corrosion resistance [124]. Therefore, Locci et al [125] proposed that the In718-316 l combination can be used to manufacture micro nuclear power generation devices for space exploration. Akiba et al [126] stated that nuclear reactors can be made of tungsten-copper FGM because tungsten has the advantages of high melting point and resistance to plasma radiation, and copper has high thermal conductivity, which can improve the heat exchange efficiency of the cooling water system.…”

Section: Potential Applications Of Laser-based Macro-scale Multiple M...mentioning

confidence: 99%

An overview of laser-based multiple metallic material additive manufacturing: from macro- to micro-scales

Wei

Zhang

Cheng

et al. 2020

Int. J. Extrem. Manuf.

117

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Additive manufacturing (AM) is an emerging customized three-dimensional (3D) functional product fabrication technology. It provides a higher degree of design freedom, reduces manufacturing steps, cost and production cycles. However, existing metallic component 3D printing techniques are mainly for the manufacture of single material components. With the increasing commercial applications of AM technologies, the need for 3D printing of more than one type of dissimilar materials in a single component increases. Therefore, investigations on multi-material AM (MMAM) emerge over the past decade. Lasers are currently widely used for the AM of metallic components where high temperatures are involved. Here we report the progress and trend in laser-based macro- and micro-scale AM of multiple metallic components. The methods covered in this paper include laser powder bed fusion, laser powder directed energy deposition, and laser-induced forward transfer for MMAM applications. The principles and process/material characteristics are described. Potential applications and challenges are discussed. Finally, future research directions and prospects are proposed.

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“…A variety of components in material combinations of Ni, Co, Ti, or steel alloys have been produced including valve body, well head, flywheel, extrusion dies, grinding roll for corrosion and wear-resistant applications, and turbine blisks [3,[7][8][9][11][12][13]. Feasibility of HIP bonding Ni superalloy and Mo-Re refractory alloy, dissimilar Vanadium alloys, Cu alloy and Ni alloy, stainless steel and Ni alloy, and stainless steel and Ti alloy have been studied at lab-scale [14][15][16][17]. To the best of our knowledge, powder-to-powder HIP diffusion bonding has rarely been studied [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Processing, Microstructure, and Properties of Bimetallic Steel-Ni Alloy Powder HIP

Huang,

Shen,

Samarov

2024

Metals

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This work explores technical feasibility in hot isostatic pressing (HIP) manufacturing of an integral bimetallic component using steel and Ni alloy powder for supercritical carbon dioxide (sCO2) turbomachinery. Lab-scale bimetallic HIP specimens using HAYNES® 282® and SS316L or SS415 powder are investigated in powder configuration, heat treatment, microstructure, and tensile properties up to 400 °C. Interdiffusion profiles at dissimilar alloy interfaces caused by HIP cycle is predicted by DICTRA simulations and validated by electron probe microanalysis (EPMA). The interdiffusion distance of most elements is around 100 μm, while C and N have a higher interdiffusion distance. Dense distribution of Ti-rich carbonitrides and alumina particles are found to decorate prior particle boundaries near joining interface on the 282 side, affecting tensile strength across interface as well as tensile failure location. A higher amount of excessive carbonitride formation near interface is observed in SS316L/282 than in SS415/282, which is consistent with the predicted greater degree of interdiffusion effect in SS316L/282. Typical HAYNES® 282® heat treatment condition is applicable to 282/SS316L and 282/SS415 combinations, resulting in a higher strength than cast CF8M and CA6NM. A pilot-scale bimetallic SS415/282 pipe is then demonstrated to show the promise of scaleup.

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High Temperature Stability of Dissimilar Metal Joints in Fission Surface Power Systems

Abstract: Abstract. P u m generations of power systems for spacecraft and lunar surface systems will likely require a strong dependence on nuclear power. The design of a space nuclear power plant involves

Cited by 6 publications

References 2 publications

Microstructure and Mechanical Characterization Study in the IN718/BNi-2/316L Joint by Transient Liquid Phase Bonding Process

Microstructure and Mechanical Characterization Study in the IN718/BNi-2/316L Joint by Transient Liquid Phase Bonding Process

An overview of laser-based multiple metallic material additive manufacturing: from macro- to micro-scales

Processing, Microstructure, and Properties of Bimetallic Steel-Ni Alloy Powder HIP

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