Characteristics of Interdiffusion between 17-4 PH Steel and Nickel

Laik, A.; Gawde, P. S.; Bhanumurthy, K.; Kale, G.B.

doi:10.1007/s11661-007-9457-2

Cited by 12 publications

(6 citation statements)

References 19 publications

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“…In the case of the sintered parts, besides universal joining techniques such as welding or brazing, sinter-bonding and sinter-brazing are increasingly used (Ref [3][4][5][6][7][8][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…It is also possible to joint green compact with part made of wrought material ( Ref 5,14). Sinter-bonding may be achieved by using different PM techniques such as conventional copressing and co-sintering ( Ref 6,[8][9][10]16), cold or hot isostatic pressing (HIP) (Ref 6), Spark Plasma Sintering (SPS) (Ref 1) or co-injection molding (Ref [17][18][19][20][21][22][23][24][25][26]. It is considered that copressing and co-sintering of two materials are a beneficial solution because of simple production and lower cost in comparison with other fabrication methods (with addition joining operation).…”

Section: Introductionmentioning

confidence: 99%

“…The sinter-bonding behavior was studied by several authors ( [13][14][15][16][18][19][20][21][23][24][25][26] The studies focused on the influence of the techniques and conditions of sinter-bonding on an interface formation between two materials as a result of co-sintering, the densification, an evolution of microstructure as well as the microstructural characterization in order to achieve the crack-free complex products. It can be stated that sintering conditions have a significant effect on the densification and the co-sintering behaviors.…”

Section: Introductionmentioning

confidence: 99%

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Sinter-Bonding of AISI 316L and 17-4 PH Stainless Steels

Szewczyk-Nykiel

Bogucki

2018

J. of Materi Eng and Perform

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The sinter-bonding method was used to produce AISI 316L/17-4 PH components by conventional powder metallurgy technology. The production process consisted of following steps: the powder layering, copressing and co-sintering processes. The co-sintering process was carried out at different sintering temperatures (1200, 1250 and 1300°C), and times (60, 90 and 120 min) in hydrogen atmosphere. The effect of co-pressing and co-sintering conditions on the ability to create a permanent connection between AISI 316L and 17-4 PH stainless steels was investigated. The densification, dimensional change and microstructural evolution of sintered AISI 316L/17-4 PH components were studied. The increase in co-pressing pressure as well as using of the longer time and the higher temperature of co-sintering process contributed to increase in AISI 316L/17-4 PH component density. The dilatometric study as well as dimensional changes measurements revealed an appropriate sintering compatibility for AISI 316L and 17-4PH steels when the sintering process was carried out at the temperature of 1200°C for time ranging from 60 to 120 min and at 1250°C for shorter sintering times. The sintering at temperature of 1300°C (regardless of other manufacturing conditions) led to a significant deviation from the cylindrical shape of samples, as a result of difference of shrinkage of AISI 316L and 17-4 PH steels. Microstructural study indicated that AISI 316L and 17-4 PH steels creates a good diffusion joint (without any cracks and warpage) during the hightemperature sintering process. Nickel diffusion takes place from the AISI 316L to 17-4 PH stainless steel, and copper and molybdenum diffuse in opposite direction of nickel diffusion. It is possible to achieve a solid connection between two materials exhibiting difference in chemical composition by using sinter-bonding and conventional powder metallurgy technology.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sinter-Bonding of AISI 316L and 17-4 PH Stainless Steels

Szewczyk-Nykiel

Bogucki

2018

J. of Materi Eng and Perform

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“…They often have a lower melting temperature or form a temporary liquid phase of eutectic composition. As a result, the diffusion coefficient is considerably increased locally and formation of the bond is supported …”

Section: Introductionmentioning

confidence: 99%

Challenges of Diffusion Bonding of Different Classes of Stainless Steels

Gietzelt¹,

Toth²,

Huell³

2017

Adv Eng Mater

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Solid state diffusion bonding is used to produce monolithic parts exhibiting mechanical properties comparable to those of the bulk material. This requires diffusion of atoms across mating surfaces at high temperatures, accompanied by grain growth. In case of steel, polymorphy helps to limit the grain size, since the microstructure is transformed twice. The diffusion coefficient differs extremely for ferritic and austenitic phases. Alloying elements may shift or suppress phase transformation until the melting range. In this paper, diffusion bonding experiments are reported for austenitic, ferritic, and martensitic stainless steels possessing varying alloying elements and contents. Passivation layers of different compositions are formed, thus affecting the local diffusion coefficient and impeding diffusion across faying surfaces. As a consequence, different bonding temperatures are needed to obtain good bonding results, making it difficult to control the deformation of parts, since strong nonlinearities exist between temperature, bonding time, and bearing pressure. For martensitic stainless steel, it is shown that it is very easy to obtain good bonding results at low deformation, whereas ferritic and austenitic stainless steels require much more extreme bonding parameters.

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“…At the same time, when many attempts were made to devise methods to evaluate the diffusion coefficients of multicomponent systems [22][23][24][25][26], Dayananda et al [27,28] have proposed an approach to solving the problem and defining a parameter, the average effective interdiffusion coefficient, which represents the diffusion coefficient averaged over a selected range of compositions for a particular component. Such a parameter can satisfactorily explain the diffusion behavior in many multicomponent systems, such as Fe-Ni-Cr-X (X = Si, Ge) [29], 17-4 PH steel-Ni [30], and L1 2 -Ni 3 Al with ternary alloying addition of Re [31]. This parameter, however, cannot be used for describing all elements of the diffusivity matrix, [D], in systems more complicated than the ternary system.…”

Section: Introductionmentioning

confidence: 99%