Influence of Carbon and Nickel on Linear Thermal Expansion Coefficient in Low Thermal Expansion Fe-Ni-C Alloys

Hatate, Minoru; Sumimoto, Haruyoshi; Nakamura, Kohkichi

doi:10.2320/jinstmet1952.54.9_1036

Cited by 5 publications

(6 citation statements)

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“…3. The effective distribution coefficient of Ni, k e Ni , exhibited behavior similar to that of Fe-30.77%Ni-xC ternary alloy [3]. The effective distribution coefficient of Ni was lower than unity at low carbon content, and increased with increasing carbon content.…”

Section: Resultsmentioning

confidence: 66%

“…The nickel content of Fe-30.77 wt.% Ni-xC Invar alloy approaches eutectic composition and the CTE increases with decreasing matrix homogeneity as well as reducing the volume fraction of the γ phase while increasing the carbon content in the Fe-Ni-C ternary alloy. And the CTE is directly affected by Ni composition and volume fraction of primary austenite [3].…”

Section: Resultsmentioning

confidence: 99%

“…Generally, the mechanical properties of conventional Invar alloy are strengthened by cold working [1,2]. The effect of nickel, carbon and other alloying elements on the CTE change in Fe-Ni binary Invar alloy has been studied [3][4][5]. Such Invar alloys as Fe-32 wt.%Ni-4 wt.%Co-xTi alloy and Fe-Ni-Mo-C alloy have been developed to improve mechanical strength [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…It is generally expected that carbon concentration affects not only mechanical properties but also CTE related to magnetic properties. Hatate et al reported that the CTE is directly changed by the concentration of carbon and nickel in Fe-(27~40 wt.%) Ni Invar alloy [3,4]. They also suggested that the CTE in Fe-Ni-C Invar alloy is affected by Ni segregation in the microstructure related to carbon contents.…”

Section: Introductionmentioning

confidence: 99%

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Effect of carbon on the coefficient of thermal expansion of as-cast Fe−30wt.%Ni−12.5wt.%Co−×C invar alloys

et al. 2002

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The segregation (distribution) of nickel and the composition of its constituents influence the low thermal expansion characteristics (Invar effect) in Fe-30 wt.% Ni-12.5 wt.% Co-xC Invar alloy. The change of coefficient of the thermal expansion and magnetic properties were studied as an aspect of carbon addition causing the segregation of Ni in primary austenite of as-cast Fe-30 wt.% Ni-12.5 wt.% Co Invar alloy. The coefficient of thermal expansion of Fe-30 wt.% Ni-12.5 wt.% Co-xC Invar alloy showed its lowest value at 0.08 wt.% carbon, increased with increasing carbon content in the range of 0.08-1.0 wt.%C, kept constant at 1.0-2.0 wt.%C and decreased at carbon higher than 2.0 wt.%. The effective distribution of the coefficient of nickel in as-cast Fe-30 wt.% Ni-12.5 wt.% Co-xC Invar alloy increased with increasing carbon content. The volume fraction of the γ phase of Fe-30 wt.% Ni-12.5 wt.% Co-xC alloy increased with increasing carbon content. The microstructure of Fe-30 wt.% Ni-12.5 wt.% Co-xC alloy changed with the carbon content was independent of the coefficient of thermal expansion. The Curie temperature changed linearly with the carbon content and was similar to the change of the coefficient of thermal expansion. Moreover, the coefficient of thermal expansion decreased when the ratio of saturation magnetization to Curie temperature (σ s /T c ) increased, decreasing the Curie temperature and showed a specific relationship with the magnetic properties of the Fe-30 wt.% Ni-12.5 wt.% Co-xC Invar alloy.

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Section: Resultsmentioning

confidence: 66%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of carbon on the coefficient of thermal expansion of as-cast Fe−30wt.%Ni−12.5wt.%Co−×C invar alloys

et al. 2002

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“…Both works remarked that presence of C and other elements like N worsen the thermal stability of invar alloys. Hatate et al (1990) reported that the CTE is directly affected by the concentration of carbon and nickel in Fe-(27∼40 wt.%) Ni Invar alloy. They also suggested that the CTE of the Fe-Ni-C Invar alloy is affected by Ni segregation in the primary austenite microstructure related to carbon content.…”

Section: Introductionmentioning

confidence: 99%

Water soluble Invar 36 feedstock development for μPIM

Hidalgo

Jiménez-Morales

Barrière

et al. 2014

Journal of Materials Processing Technology

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Micro powder injection moulding Invar 36 Solid loading optimisationA water soluble binder system based on cellulose acetate butyrate (CAB) and polyethylene glycol (PEG) is proposed and investigated to carry out a micro powder injection moulding (PIM) process with an Invar 36 alloy powders. The overall process was optimised with an emphasis on the determination of the optimal solid loading. Several methodologies were evaluated and compared to determine this parameter. A full PIM was performed with different powder content feedstocks. Dog bone-type micro test parts were fabricated thereof and their mechanical properties were evaluated. Solid loadings up to 65 vol.%resulted to have the most equilibrated properties to successfully fabricate Invar 36 micro parts with the selected powder and binder system.

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The Effect of Homogenization Heat Treatment on Thermal Expansion Coefficient and Dimensional Stability of Low Thermal Expansion Cast Irons

Chen

Liu

Pan

2016

Metall Mater Trans A

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Influence of Carbon and Nickel on Linear Thermal Expansion Coefficient in Low Thermal Expansion Fe-Ni-C Alloys

Cited by 5 publications

References 0 publications

Effect of carbon on the coefficient of thermal expansion of as-cast Fe−30wt.%Ni−12.5wt.%Co−×C invar alloys

Effect of carbon on the coefficient of thermal expansion of as-cast Fe−30wt.%Ni−12.5wt.%Co−×C invar alloys

Water soluble Invar 36 feedstock development for μPIM

The Effect of Homogenization Heat Treatment on Thermal Expansion Coefficient and Dimensional Stability of Low Thermal Expansion Cast Irons

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