Microstructural development and evolution in liquid-phase sintered Fe-Cu alloys

Niemi, A. N.; Courtney, T. H.

doi:10.1007/bf00552076

Cited by 49 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The coalescence process is likely to occur when the volume fraction of solid phase is large enough to contact each grain. 24 In such conditions, grains will grow via coalescence of the solid phase rather than by diffusion through the liquid phase. The driving force for coalescence is reduction of the total system energy by eliminating grain-boundary area.…”

Section: (2) Grain Growth In Sio 2 -Doped 3y-tzpmentioning

confidence: 99%

Grain Growth of Silica‐Added Zirconia Annealed in the Cubic/Tetragonal Two‐Phase Region

Zhao

Ikuhara

Sakuma

1998

Journal of the American Ceramic Society

View full text Add to dashboard Cite

The grain growth in silica-doped 3-mol%-yttria-stabilized tetragonal zirconia polycrystals (SiO 2 -doped 3Y-TZP) and undoped 3Y-TZP has been examined in the temperature range of 1400°-1800°C. The presence of a SiO 2 phase inhibits rather than promotes the grain growth in 3Y-TZP, particularly at high temperatures. During the grain growth in 3Y-TZP, yttrium ions are partitioned between grains, and the grain growth mechanism can be understood from Ostwald ripening dominated by lattice diffusion of cations. In SiO 2 -doped 3Y-TZP, an amorphous SiO 2 -rich phase exists only in the grain-boundary corners or junctions, not in the grain-boundary faces. The grain growth in SiO 2 -doped 3Y-TZP is controlled by using different mechanisms below and above the eutectic temperature of the zirconia-silica (ZrO 2 -SiO 2 ) system. The glass phase does not have a major role in grain growth below the eutectic temperature, and the grain growth is dominated by a similar mechanism in undoped 3Y-TZP. The grain growth is more effectively retarded by the presence of a SiO 2 phase above the eutectic temperature and is likely to be controlled by a solutionreprecipitation process in the amorphous phase at the grain-boundary corners or junctions.

show abstract

Section: (2) Grain Growth In Sio 2 -Doped 3y-tzpmentioning

confidence: 99%

Grain Growth of Silica‐Added Zirconia Annealed in the Cubic/Tetragonal Two‐Phase Region

Zhao

Ikuhara

Sakuma

1998

Journal of the American Ceramic Society

View full text Add to dashboard Cite

show abstract

“…Besides coarsening, other dynamical processes during growth of Ni 3 Sn 4 scallops were faceting which was very common and coalescence 5 which was somewhat less common. Liquid-phase sintering studies have shown that the probability of coalescence increases with (i) increasing volume fraction of the solid phase, 42 and (ii) the formation of favored orientations by particle rotation 43 and dissociation of high-energy grain boundaries. As an example, Fig.…”

Section: The Kinetic Parametersmentioning

confidence: 99%

A comparative study of the kinetics of interfacial reaction between eutectic solders and Cu/Ni/Pd metallization

Ghosh

2000

Journal of Elec Materi

View full text Add to dashboard Cite

Special Issue PaperKey words: Diffusion path, interfacial reaction, metallization, nickel-palladium, Ni 3 Sn 4 , PdSn 4 , solder related to materials, processing, and operation of electronic devices it has been realized that the soldering technology plays an important role in the reliability of the electronic packages. These factors include the use of increasingly dense arrays of interconnects, the miniaturization of electronic packages and the associated miniaturization of solder joints, the use of lead-free solders, the higher operating temperature 1183 A Comparative Study of the Kinetics of Interfacial Reaction Between Eutectic Solders and Cu/Ni/Pd Metallization

show abstract

“…Higher solid-volume fractions enhance the contribution of coalescence to grain growth. [8,[12][13][14][15][16][17][18][19][20] In coalescence, contacting grains fuse by either grainboundary migration or grain rotation, or because the contact occurs without grain misorientation. The high solid-volume fractions typical for liquid-phase sintering give much higher grain-growth rates and broader grain size distributions than are predicted by Ostwald ripening, indicating that grain coarsening involves grain coalescence.…”

Section: Introductionmentioning

confidence: 99%

Grain Growth in Dilute Tungsten Heavy Alloys during Liquid-Phase Sintering under Microgravity Conditions

Johnson¹,

Campbell

Park

et al. 2009

Metall Mater Trans A

View full text Add to dashboard Cite

Tungsten heavy alloys with compositions ranging from 35 to 93 wt pct tungsten were liquidphase sintered at 1500°C under microgravity conditions for isothermal hold times ranging from 1 to 600 minutes. The solid-volume fraction, grain size, grain size distribution, connectivity, and contiguity of the sintered microstructures were quantitatively measured. From these data, graingrowth-rate constants are determined for solid-volume fractions ranging from 0.048 to 0.858 and are compared to the predictions of several grain-coarsening models. The measured grain size distributions are shown to be self-similar and are fit to a Weibull distribution. Threedimensional (3-D) grain size distributions from several coarsening models are transformed into grain size distributions for two-dimensional (2-D) cross sections, for comparison with the experimental data. Chi-squared tests and G-tests show that a coalescence model for grain growth fits the experimental observations better than solution-reprecipitation models, even for dilute tungsten heavy alloys.

show abstract

Microstructural development and evolution in liquid-phase sintered Fe-Cu alloys

Cited by 49 publications

References 16 publications

Grain Growth of Silica‐Added Zirconia Annealed in the Cubic/Tetragonal Two‐Phase Region

Grain Growth of Silica‐Added Zirconia Annealed in the Cubic/Tetragonal Two‐Phase Region

A comparative study of the kinetics of interfacial reaction between eutectic solders and Cu/Ni/Pd metallization

Grain Growth in Dilute Tungsten Heavy Alloys during Liquid-Phase Sintering under Microgravity Conditions

Contact Info

Product

Resources

About