scholarly journals Effect of two-stage sintering process on microstructure and mechanical properties of ODS tungsten heavy alloy

2007 ◽  
Vol 458 (1-2) ◽  
pp. 323-329 ◽  
Author(s):  
Kyong H. Lee ◽  
Seung I. Cha ◽  
Ho J. Ryu ◽  
Soon H. Hong
2019 ◽  
Vol 61 (3) ◽  
pp. 209-212
Author(s):  
Ramachandran Damodaram ◽  
Gangaraju Manogna Karthik ◽  
Sree Vardhan Lalam

2018 ◽  
Vol 5 (2) ◽  
pp. 3914-3918 ◽  
Author(s):  
U. Ravi Kiran ◽  
Shiv Kumar Khaple ◽  
M. Sankaranarayana ◽  
G.V.S. Nageswara Rao ◽  
T.K. Nandy

Rare Metals ◽  
2018 ◽  
Vol 38 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Wen-Long Zhang ◽  
Dai-Hong Xiao ◽  
Ting Li ◽  
Jian-Di Du ◽  
Dong-Yan Ding

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4200 ◽  
Author(s):  
Adéla Macháčková ◽  
Ludmila Krátká ◽  
Rudolf Petrmichl ◽  
Lenka Kunčická ◽  
Radim Kocich

This study focuses on numerical prediction and experimental investigation of deformation behaviour of a tungsten heavy alloy prepared via powder metallurgy and subsequent cold (20 °C) and warm (900 °C) rotary swaging. Special emphasis was placed on the prediction of the effects of the applied induction heating. As shown by the results, the predicted material behaviour was in good correlation with the real experiment. The differences in the plastic flow during cold and warm swaging imparted differences in structural development and the occurrence of residual stress. Both the swaged pieces exhibited the presence of residual stress in the peripheries of W agglomerates. However, the NiCO matrix of the warm-swaged piece also exhibited the presence of residual stress, and it also featured regions with increased W content. Testing of mechanical properties revealed the ultimate tensile strength of the swaged pieces to be approximately twice as high as of the sintered piece (860 MPa compared to 1650 MPa and 1828 MPa after warm and cold swaging, respectively).


2017 ◽  
Vol 705 ◽  
pp. 283-289 ◽  
Author(s):  
Ehsan Ghasali ◽  
Kamyar Shirvanimoghaddam ◽  
Amir Hossein Pakseresht ◽  
Masoud Alizadeh ◽  
Touradj Ebadzadeh

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