Analysis of the effect of solubility on the densification behavior of tungsten heavy alloys using the master sintering curve approach

Park, Seong Jin; Johnson, John L.; Wu, Yixian; Kwon, Young−Soo; Lee, Seong; German, Randall M.

doi:10.1016/j.ijrmhm.2012.10.016

Cited by 24 publications

(9 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Initially developed by Su and Johnson [23] to obtain a single apparent activation energy for densification of a given ceramic system, the MSC equations were modified by Park et al [24,25] to calculate apparent activation energies for both densification and grain growth for W-Ni-Fe alloys before, during, and after formation of the liquid phase. These modified MSC equations were further used to calculate the apparent activation energy for sintering, densification function, and work of sintering for W-Ni-Fe, W-Ni-Cu, and W-Cu to create a master sintering surface for different solubilities of W in the liquid phase [26].…”

Section: Introductionmentioning

confidence: 99%

Activated liquid phase sintering of W–Cu and Mo–Cu

Johnson¹

2015

International Journal of Refractory Metals and Hard Materials

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Activated liquid phase sintering of W–Cu and Mo–Cu

Johnson¹

2015

International Journal of Refractory Metals and Hard Materials

Self Cite

View full text Add to dashboard Cite

“…Park et al [15] successfully applied this theory to tungsten heavy alloys. In addition, MSC has been introduced in industry to guide the manufacturing process.…”

Section: Su and Johnson [14] Constructed The Msc For Al 2 O 3 -Tio 2 mentioning

confidence: 99%

Master sintering curves for UO2 and UO2–SiC composite processed by spark plasma sintering

Chen

Subhash

Tulenko

2014

Journal of Nuclear Materials

View full text Add to dashboard Cite

Master sintering curve (MSC) theory has been applied successfully to UO 2 and UO 2-SiC composite ceramics processed using spark plasma sintering (SPS). By applying the constant heating rate method, where the powder compact was heated at a constant rate to a specified maximum temperature and then cooled naturally, the apparent activation energies for sintering have been determined to be 140 KJ/mol for UO 2 and 420 KJ/mol for UO 2-SiC composite. The ability of the derived MSCs to control and predict final density in the sintered compact was demonstrated by additional experimental runs using the isothermal heating method, in which the powder is held for a specified time at the maximum sintering temperature. It is shown that the master sintering curve is an effective tool to characterize the densification and sinterability behavior of a given nuclear powder compact during spark plasma sintering. The reason

show abstract

“…The concept of MSC, which was originally developed for the sintering of ceramic powders, has been successfully extended to the sintering with metallic powders such as Al 2 O 3 , XnO, rhenium, and nickel powders [2][3][4][5][6][7]. More recently, pressure-assisted sintering of hard metallic powders such as tungsten alloys and WC alloys has been reported [8,9]. For instance, An [9] constructed the master sintering curves for the mixture of WC, Cu, and Ni powders to understand densification behaviors during the resistance 2 Advances in Materials Science and Engineering heating.…”

Section: Introductionmentioning

confidence: 99%

Development of a Master Sintering Curve for Al-Mg Alloy

Lee

Lee²,

Lee

et al. 2016

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

A new master sintering curve (MSC) is proposed for Al-Mg alloy in order to effectively design the pressure-assisted sintering process. In this work, hot pressing experiments of Al-Mg alloy powders are performed. The changes of relative density during hot pressing are measured for the various heating rates of 5 ∘ C/min, 10 ∘ C/min, and 20 ∘ C/min at the fixed pressure of 50 MPa. A work of sintering, designated as Θ, is introduced and defined as Θ( , ) = ∫ 0 (1/ )exp(− / ) . A work of sintering, Θ, could be interpreted as a measure for the amount of sintering work. The MSC in this work defines the relation between the apparent density and a work of sintering, Θ. Since the measurement of an apparent activation energy, , is very difficult, the correct value of is obtained numerically using a mean residual square method. Then, the master sintering curves for sintering of Al-Mg alloy powders are proposed for the sintering temperatures of 400 ∘ C and 500 ∘ C through scaling procedures. It is expected that the master sintering curves proposed in this work could help an engineer to design pressure-assisted sintering process for Al-Mg alloy.

show abstract

Analysis of the effect of solubility on the densification behavior of tungsten heavy alloys using the master sintering curve approach

Cited by 24 publications

References 17 publications

Activated liquid phase sintering of W–Cu and Mo–Cu

Activated liquid phase sintering of W–Cu and Mo–Cu

Master sintering curves for UO2 and UO2–SiC composite processed by spark plasma sintering

Development of a Master Sintering Curve for Al-Mg Alloy

Contact Info

Product

Resources

About