The effect of microstructure on creep behavior of a powder metallurgy (PM) beta gamma alloy

2012 ◽  
Vol 26 (7) ◽  
pp. 2009-2013
Author(s):  
D. Y. Seo ◽  
T. Sawatzky ◽  
H. Saari ◽  
D. J. Kim ◽  
P. Au ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Creep Behavior ◽  
Effect Of Microstructure

Characterization of the Microstructure, Tensile and Creep Behavior of Powder Metallurgy Processed and Rolled Ti-6Al-4V-1B Alloy

2010 ◽  
Vol 436 ◽  
pp. 195-203 ◽  
Author(s):  
Wei Chen ◽  
Carl J. Boehlert
Keyword(s):  
Elevated Temperature ◽  
Powder Metallurgy ◽  
Creep Behavior ◽  
Creep Deformation ◽  
Deformation Behavior ◽  
Creep Resistance ◽  
Tensile Creep ◽  
Duplex Microstructure ◽  
Α Phase

This work investigated the microstructure and elevated-temperature (400-475oC) tensile and tensile-creep deformation behavior of a powder metallurgy (PM) rolled Ti-6Al-4V-1B(wt.%) alloy. The PM rolled Ti-6Al-4V-1B alloy exhibited a duplex microstructure, and it did not exhibit a strong α-phase texture compared with the PM extruded Ti-6Al-4V-1B alloy. The PM rolled Ti-6Al-4V-1B alloy exhibited greater creep resistance than the PM extruded Ti-6Al-4V-1B alloy as well as the as-cast Ti-6Al-4V-1B alloy.

The Effect of Microstructure Heterogeneity on Fatigue Property of Powder Metallurgy Steels

2008 ◽  
Vol 273-276 ◽  
pp. 348-353 ◽  
Author(s):  
H. Abdoos ◽  
H. Khorsand ◽  
A.R. Shahani ◽  
M. Arjomandi
Keyword(s):  
Powder Metallurgy ◽  
Fatigue Behavior ◽  
Local Stress ◽  
Fatigue Property ◽  
Fatigue Performance ◽  
Loading Mode ◽  
Stress Risers ◽  
High Fatigue ◽  
Different Response ◽  
Effect Of Microstructure

Powder metallurgy is a new method for mass production of precision components with appropriate mechanical properties, but in this kind of materials (PM parts) with special microstructures (pores act as local stress risers), fracture due to fatigue is expected as an important destructive factor. Various microstructures in powder metallurgy steels, depending on alloying methods, have different response against cyclic loading. diffusion bonding is an effective method to obtain high fatigue performance in PM steels. The main characteristic of this materials consists of well-organized phases distribution due to incomplete diffusion of alloying elements. In this study fatigue behavior of diffusion-bonded, distaloy AE, steel with two carbon contents under different periodic loading are investigated. The effect of carbon content and various loading mode upon fatigue performance is analyzed. Metallugraphy and fractography examination on fatigue loaded samples revealed the positive effect of microstructure heterogeneity on fatigue crack behavior and this concept is a reason for increasing of diffusion-bonded powders application to manufacturing of components that are subjected to cyclic stresses.

On Creep Behavior in Powder Metallurgy 6061 Al

1998 ◽  
Vol 38 (3) ◽  
pp. 457-463 ◽  
Author(s):  
Farghalli A. Mohamed
Keyword(s):  
Powder Metallurgy ◽  
Creep Behavior
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