Effect of process control agent on alloying and mechanical behavior of L21 phase Ni–Ti–Al alloys

2019 ◽  
Vol 740-741 ◽  
pp. 130-136 ◽  
Author(s):  
Jun Shi ◽  
Aofeng Zheng ◽  
Zehui Lin ◽  
Rong Chen ◽  
Jugong Zheng ◽  
...  
Keyword(s):  
Process Control ◽  
Mechanical Behavior ◽  
Control Agent ◽  
Al Alloys ◽  
Process Control Agent

ROLE OF PROCESS CONTROL AGENT ON MECHANICAL ALLOYING OF NANO STRUCTURED TiAl-BASED ALLOY

2008 ◽  
Vol 22 (18n19) ◽  
pp. 2933-2938 ◽  
Author(s):  
H. BAHMANPOUR ◽  
S. HESHMATI-MANESH
Keyword(s):  
Process Control ◽  
Stearic Acid ◽  
Milled Powder ◽  
High Energy ◽  
Control Agent ◽  
X Ray Diffraction ◽  
Process Control Agent ◽  
Crystallite Sizes ◽  
Energy Ball ◽  
Milled Powders

High energy ball milling was performed on a mixture of titanium and aluminum elemental powders with a composition of Ti -48(at.%) Al . Stearic acid was added to this powder mixture as a process control agent (PCA) to study its effect on the microstructure evolution and crystallite size of the milled powder after various milling times. Phase compositions and morphology of the milled powders were evaluated using X-ray diffraction and scanning electron microscopy. Crystallite sizes of milled powders were determined by Cauchy-Gaussian approach using XRD profiles. It was shown that addition of 1wt.% of stearic acid not only minimizes the adhesion of milling product to the vial and balls, but also reduces its crystallite sizes. It has also a marked effect on the morphology of the final product.

Long-term stability of the microstructure of austenitic ODS steel rods produced with a carbon-containing process control agent

2019 ◽  
Vol 523 ◽  
pp. 111-120 ◽  
Author(s):  
Tim Gräning ◽  
Michael Klimenkov ◽  
Michael Rieth ◽  
Cornelia Heintze ◽  
Anton Möslang
Keyword(s):  
Process Control ◽  
Control Agent ◽  
Process Control Agent ◽  
Term Stability ◽  
Long Term Stability ◽  
Ods Steel
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