Investigation of Flow Stress and Microstructure Evolution of 403Nb Under Hot Compression

2007 ◽  
Vol 14 (5) ◽  
pp. 355-358
Author(s):  
Li-min WANG ◽  
Ning LIU ◽  
Li-qing CHEN ◽  
Xiang-hua LIU ◽  
Zheng-dong LIU ◽  
...  
Keyword(s):  
Flow Stress ◽  
Microstructure Evolution ◽  
Hot Compression

Flow stress characteristics and microstructure evolution during hot compression of Nb-47Ti alloy

2019 ◽  
Vol 797 ◽  
pp. 735-743 ◽  
Author(s):  
Lianpeng Su ◽  
Hanyuan Liu ◽  
Lei Jing ◽  
Zhentao Yu ◽  
Wenxian Wang ◽  
...  
Keyword(s):  
Flow Stress ◽  
Microstructure Evolution ◽  
Hot Compression

Precipitate coarsening during hot-compression testing of NiAl + 2 at.% Nb

1986 ◽  
Vol 44 ◽  
pp. 598-599
Author(s):  
W. M. Sherman ◽  
K. M. Vedula
Keyword(s):  
High Temperature ◽  
Flow Stress ◽  
Weight Ratio ◽  
Constant Strain Rate ◽  
Hot Compression ◽  
Compression Testing ◽  
Second Phase ◽  
Precipitate Coarsening ◽  
High Temperature Mechanical Properties ◽  
Ordered Intermetallic

The strength to weight ratio and oxidation resistance of NiAl make this ordered intermetallic, with some modifications, an attractive candidate to compete with many superalloys for high temperature applications. Recent studies have shown that the inherent brittleness of many polycrystalline intermetallics can be overcome by micro and macroalloying. It has also been found that the high temperature mechanical properties of NiAl can be enhanced through the addition of Nb by powder metallurgical techniques forming a dispersed second phase through interdiffusion in a polycrystalline matrix. A drop in the flow stress is observed however in a NiAl-2 at.% Nb alloy after 0.2 % strain during constant strain rate hot compression testing at 1025°C. The object of this investigation was to identify the second phase and to determine the cause of the flow stress drop.

scholarly journals Modelling of Flow Stress and Prediction of Workability by Processing Map for Hot Compression of 43CrNi Steel

2017 ◽  
Vol 57 (3) ◽  
pp. 497-505 ◽  
Author(s):  
Niranjan Kumar ◽  
Sanjeev Kumar ◽  
Sunil Kumar Rajput ◽  
Sumeer Kumar Nath
Keyword(s):  
Flow Stress ◽  
Processing Map ◽  
Hot Compression
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