Effect of oxygen, grain size, and strain rate on the mechanical behavior of forged P/M tantalum

Christopher A. Michaluk; George Thompson Gray; Tapan Chatterjee

Effect of oxygen, grain size, and strain rate on the mechanical behavior of forged P/M tantalum

Christopher A. Michaluk
, George Thompson Gray
, Tapan Chatterjee

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Scopus citations

Abstract

The effect of oxygen, grain size, and strain rate on the quasistatic and dynamic mechanical properties of extruded, forged, and annealed P/M tantalum containing two different levels of oxygen is addressed. The high oxygen (250-400 ppm) P/M materials were characterized as having a higher flow stress and greater work hardening than wrought high purity tantalum. Work hardening and relative strain rate sensitivity exponents of the P/M materials were found to be relatively independent of oxygen level and grain size and slightly dependent on strain rate. This behavior may be due to the existence of fine dispersion of tantalum oxide particles. The state of oxygen in the P/M forgings was investigated by TEM analysis.

Original language	English
Title of host publication	P/M in Aerospace, Defense and Demanding Applications - 1993
Publisher	Unknown Publisher
Pages	195-204
Number of pages	10
ISBN (Print)	1878954318
State	Published - Jan 1 1993
Externally published	Yes
Event	Proceedings of the 3rd International Conference on Powder Metallurgy in Aerospace, Defense and Demanding Applications - Duration: Jan 1 1993 → …

Publication series

Name	P/M in Aerospace, Defense and Demanding Applications - 1993

Conference

Conference	Proceedings of the 3rd International Conference on Powder Metallurgy in Aerospace, Defense and Demanding Applications
Period	01/1/93 → …

Cite this

@inproceedings{80c2d5bbbe9144fdbd9825aef08b59a0,

title = "Effect of oxygen, grain size, and strain rate on the mechanical behavior of forged P/M tantalum",

abstract = "The effect of oxygen, grain size, and strain rate on the quasistatic and dynamic mechanical properties of extruded, forged, and annealed P/M tantalum containing two different levels of oxygen is addressed. The high oxygen (250-400 ppm) P/M materials were characterized as having a higher flow stress and greater work hardening than wrought high purity tantalum. Work hardening and relative strain rate sensitivity exponents of the P/M materials were found to be relatively independent of oxygen level and grain size and slightly dependent on strain rate. This behavior may be due to the existence of fine dispersion of tantalum oxide particles. The state of oxygen in the P/M forgings was investigated by TEM analysis.",

author = "Michaluk, \{Christopher A.\} and Gray, \{George Thompson\} and Tapan Chatterjee",

year = "1993",

month = jan,

day = "1",

language = "English",

isbn = "1878954318",

series = "P/M in Aerospace, Defense and Demanding Applications - 1993",

publisher = "Unknown Publisher",

pages = "195--204",

booktitle = "P/M in Aerospace, Defense and Demanding Applications - 1993",

note = "Proceedings of the 3rd International Conference on Powder Metallurgy in Aerospace, Defense and Demanding Applications ; Conference date: 01-01-1993",

}

Michaluk, CA, Gray, GT & Chatterjee, T 1993, Effect of oxygen, grain size, and strain rate on the mechanical behavior of forged P/M tantalum. in P/M in Aerospace, Defense and Demanding Applications - 1993. P/M in Aerospace, Defense and Demanding Applications - 1993, Unknown Publisher, pp. 195-204, Proceedings of the 3rd International Conference on Powder Metallurgy in Aerospace, Defense and Demanding Applications, 01/1/93.

Effect of oxygen, grain size, and strain rate on the mechanical behavior of forged P/M tantalum. / Michaluk, Christopher A.; Gray, George Thompson; Chatterjee, Tapan.
P/M in Aerospace, Defense and Demanding Applications - 1993. Unknown Publisher, 1993. p. 195-204 (P/M in Aerospace, Defense and Demanding Applications - 1993).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Effect of oxygen, grain size, and strain rate on the mechanical behavior of forged P/M tantalum

AU - Michaluk, Christopher A.

AU - Gray, George Thompson

AU - Chatterjee, Tapan

PY - 1993/1/1

Y1 - 1993/1/1

N2 - The effect of oxygen, grain size, and strain rate on the quasistatic and dynamic mechanical properties of extruded, forged, and annealed P/M tantalum containing two different levels of oxygen is addressed. The high oxygen (250-400 ppm) P/M materials were characterized as having a higher flow stress and greater work hardening than wrought high purity tantalum. Work hardening and relative strain rate sensitivity exponents of the P/M materials were found to be relatively independent of oxygen level and grain size and slightly dependent on strain rate. This behavior may be due to the existence of fine dispersion of tantalum oxide particles. The state of oxygen in the P/M forgings was investigated by TEM analysis.

AB - The effect of oxygen, grain size, and strain rate on the quasistatic and dynamic mechanical properties of extruded, forged, and annealed P/M tantalum containing two different levels of oxygen is addressed. The high oxygen (250-400 ppm) P/M materials were characterized as having a higher flow stress and greater work hardening than wrought high purity tantalum. Work hardening and relative strain rate sensitivity exponents of the P/M materials were found to be relatively independent of oxygen level and grain size and slightly dependent on strain rate. This behavior may be due to the existence of fine dispersion of tantalum oxide particles. The state of oxygen in the P/M forgings was investigated by TEM analysis.

UR - https://www.scopus.com/pages/publications/0027313832

M3 - Conference contribution

SN - 1878954318

T3 - P/M in Aerospace, Defense and Demanding Applications - 1993

SP - 195

EP - 204

BT - P/M in Aerospace, Defense and Demanding Applications - 1993

PB - Unknown Publisher

T2 - Proceedings of the 3rd International Conference on Powder Metallurgy in Aerospace, Defense and Demanding Applications

Y2 - 1 January 1993

ER -

Effect of oxygen, grain size, and strain rate on the mechanical behavior of forged P/M tantalum

Abstract

Publication series

Conference

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