Serrated Flow in Alloy Systems

2021 ◽  
pp. 523-644
Author(s):  
Mikhail A. Lebyodkin ◽  
Tatiana A. Lebedkina ◽  
Jamieson Brechtl ◽  
Peter K. Liaw
Keyword(s):  
Serrated Flow ◽  
Alloy Systems

Evaluations of alloy systems

1984 ◽  
Vol 5 (4) ◽  
pp. 340-340
Keyword(s):  
Alloy Systems

Density of Amorphous Alloy Systems (Fe1-xMx)77Si10B13[M=Co, Ni]

1979 ◽  
Vol 18 (10) ◽  
pp. 2023-2024 ◽  
Author(s):  
Mitita Goto ◽  
Hatsuo Tange ◽  
Toshihiko Tokunaga
Keyword(s):  
Amorphous Alloy ◽  
Alloy Systems

Serrated flow in gold-indium alloys

1969 ◽  
Vol 20 (165) ◽  
pp. 495-509 ◽  
Author(s):  
A. J. R. Soler-gomez ◽  
W. J. Mcg. Tegart
Keyword(s):  
Serrated Flow ◽  
Indium Alloys

DTA application in researches on phase equilibria in alloy systems

1979 ◽  
Vol 28 (1) ◽  
pp. 113-119 ◽  
Author(s):  
R. Capelli ◽  
S. Delfino ◽  
A. Saccone ◽  
A. Borsese ◽  
R. Ferro
Keyword(s):  
Phase Equilibria ◽  
Alloy Systems

Evaluations of alloy systems

1984 ◽  
Vol 5 (6) ◽  
pp. 559-559
Keyword(s):  
Alloy Systems

scholarly journals Nuclear Gamma Resonance Study of the Ir —Fe and Ir —Ni Alloy Systems

1971 ◽  
Vol 26 (3) ◽  
pp. 343-352 ◽  
Author(s):  
R.L. Mössbauer ◽  
M. Lengsfeld ◽  
W. Von Lieres ◽  
W. Potzel ◽  
T. Teschner ◽  
...  
Keyword(s):  
Composition Range ◽  
Magnetic Hyperfine Field ◽  
Band Model ◽  
Hyperfine Fields ◽  
Ni Alloys ◽  
Dilute Alloys ◽  
Ni Alloy ◽  
Bulk Magnetization ◽  
Bcc Phase ◽  
Alloy Systems

Abstract The Ir-Fe and Ir-Ni alloy systems were studied over the whole composition range by means of the nuclear resonance absorption of the 73 keV y-rays of 193Jr and of the 14.4 keV y-rays of 57Fe. The magnetic hyperfine field at the Ir-nuclei in Ir-Ni alloys decreases approximately linearly with the Ir concentration from - 460 kOe at 4.2 K in very dilute alloys to zero at about 20 at.-% Ir. This behaviour is paralleled by the decrease of the magnetic moment per Ni atom as determined from bulk magnetization measurements. The hyperfine fields at both Ir and Fe were measured for the ferromagnetic bcc phase of the Ir-Fe system. They turned out to be virtually independent of concentration with values of about -1400 kOe and - 330 kOe, respectively. Linewidths increasing with the Ir concentration indicate a distribution of hyperfine fields. The fee phase of the Ir-Fe system has been found to be paramagnetic at 4.2 K throughout the range of its existence. The dependence of the hyperfine fields on concentration is discussed in terms of a rigid 3d-band model combined with local shielding. A discussion of the concentration dependence of the 193Ir and 57Fe isomer shifts has to take into account lattice expansion as well as band repopulation effects.

scholarly journals Excellent Ductility in the Extruded AZ61 Magnesium Alloy Tube Induced by Electropulsing Treatment during Tension

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 813
Author(s):  
Bo Jiang ◽  
Dongdong Zhang ◽  
Hong Xu ◽  
Yongbing Liu ◽  
Zhanyi Cao ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Thermal Effects ◽  
Average Amplitude ◽  
Serrated Flow ◽  
Flow Phenomenon ◽  
Az61 Magnesium Alloy ◽  
Alloy Tube ◽  
Electropulsing Treatment ◽  
Electron Wind

In this work, we reported the high ductility of an extruded AZ61 magnesium alloy tube achieved by electropulsing current-assisted tension. The elongation of the alloy reached up to about 45%, which is largely superior to the majority of AZ61 wrought Mg alloys. We found that the hardening capacity of the alloy seemed to slightly increase as the electropulsing frequency increased. Furthermore, electropulsing can arouse the serrated flow phenomenon. Here we proposed an equation describing the correlation between the average amplitude and frequency: Aa = C − 6 × 10−3f, where Aa is the average amplitude, f is the frequency, and C is the constant. In addition, introducing electropulsing current pronouncedly reduced the tendency of twinning, but the twinning fraction seemed to fail depending on the electropulsing frequency. Based on microstructure analysis, we concluded that the outstanding ductility of the studied alloy was mainly due to the combined role of the thermal effects from Joule heating, the athermal effects from electron wind, and the magnetic effects from the electropulsing current. The serrated flow phenomenon occurred along stress–strain curves after electropulsing treatment, and the underlying reasons also were uncovered.

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