Economics of the improvement of the quality of steels and alloys by alloying with rare-earth metals

Metallurgist ◽  
1976 ◽  
Vol 20 (8) ◽  
pp. 538-541
Author(s):  
I. N. Ivanov ◽  
N. I. Astakhova
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals

Effect of rare-earth metals on the quality of structural steel

Metallurgist ◽  
1966 ◽  
Vol 10 (10) ◽  
pp. 574-577
Author(s):  
R. P. Konovalov ◽  
G. V. Bulgakov ◽  
N. I. Ignatov ◽  
Yu. V. Kryakovskii
Keyword(s):  
Rare Earth ◽  
Structural Steel ◽  
Rare Earth Metals

Effect of Rare Earth Metals on Diffusion and Porosity Deformation of Al-11Si-2Cu Cast Alloy

2016 ◽  
Vol 1133 ◽  
pp. 305-309
Author(s):  
Roslee Ahmad ◽  
M.B.A. Asmael
Keyword(s):  
Rare Earth ◽  
Cast Alloy ◽  
Rare Earth Metals ◽  
Optical Microscope ◽  
Casting Alloy ◽  
Cu Alloy ◽  
Porosity Defects ◽  
Rare Earth Additions

The effect of rare earth additions on diffusion and porosity deformation of Al-11Si-Cu alloy was investigated. The microstructure was characterized by optical microscope. By adding small amount of La and Ce, the porosity can be reduced. As the amount of La and Ce were increased, the porosity defects were diffused and increased in microstructure. RE intermetallic indicates Al-Cu phase interrupted the quality of Al-Si-Cu casting alloy.

scholarly journals The Effect of Rare Earth Metals Alloying on the Internal Quality of Industrially Produced Heavy Steel Forgings

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5160
Author(s):  
Petr Jonšta ◽  
Zdeněk Jonšta ◽  
Silvie Brožová ◽  
Manuela Ingaldi ◽  
Jacek Pietraszek ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Internal Quality ◽  
Experimental Development ◽  
Steel Forging ◽  
Different Types ◽  
Steel Ingots ◽  
Standard Production ◽  
Grade Steel

The paper presented the findings obtained by industrial research and experimental development on the use of rare earth metals (REMs) in the production of heavy steel ingots and their impact on the internal quality of the 42CrMo4 grade steel forging. REMs alloying was carried out after vacuuming the steel. A relatively large melting loss of cerium (about 50%) and its further decrease in casting due to reoxidation were observed. Refinement of structure and better mechanical properties of forged bar containing about 0.02 wt.% of Ce compared to that of the standard production were not achieved. The wind power shaft with content of about 0.06 wt.% of Ce showed high amount of REM inclusions, which were locally chained, and in some cases, initiated cracks. Four stoichiometrically different types of REM inclusions were detected in forgings, namely (La-Ce)2O2S + (La-Ce)O2 + SiO2 (minority); oxygen, phosphorus, arsenic, and antimony bound to lanthanum and cerium probably bonded with iron oxides La + Ce, MgO, Al2O3 a SiO2; (La-Ce)2O2S, FeO, SiO2, and CaO or CaS.

The quality of tube steel modified with rare-earth metals

Metallurgist ◽  
1974 ◽  
Vol 18 (5) ◽  
pp. 342-346
Author(s):  
V. T. Tereshchenko ◽  
I. P. Leshchenko ◽  
E. V. Tin'kova ◽  
Yu. A. Skladnov ◽  
L. S. Gorokhov ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Tube Steel

Magnetic susceptibility of liquid heavy rare earth metals

1979 ◽  
Vol 40 (C5) ◽  
pp. C5-260-C5-261 ◽  
Author(s):  
M. Müller ◽  
E. Huber ◽  
H.-J. Güntherodt
Keyword(s):  
Magnetic Susceptibility ◽  
Rare Earth ◽  
Rare Earth Metals ◽  
Heavy Rare Earth

ELECTRONIC RELAXATION IN RARE EARTH METALS AND ALLOYS - A NON-KRAMERS EXAMPLE : Tm3+

1980 ◽  
Vol 41 (C1) ◽  
pp. C1-25-C1-31 ◽  
Author(s):  
N. S. Dixon ◽  
L. S. Fritz ◽  
Y. Mahmud ◽  
B. B. Triplett ◽  
S. S. Hanna ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Metals And Alloys ◽  
Electronic Relaxation

Leaching of Rare Earth Metals from Manganese Nodule by HCl Solution

2015 ◽  
Vol 53 (9) ◽  
pp. 637-641
Author(s):  
Chul-Woo Nam ◽  
Kyung-Ho Park ◽  
Hyun-Ho Kim ◽  
Jin-Tae Park
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Manganese Nodule ◽  
Hcl Solution

Physico-chemical properties of the rare-earth metals, scandium, and yttrium

1963 ◽  
Vol 79 (2) ◽  
pp. 263-293 ◽  
Author(s):  
E.M. Savitskii ◽  
V.F. Terekhova ◽  
O.P. Naumkin
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Chemical Properties ◽  
Physico Chemical ◽  
The Rare Earth

Ferromagnetism and antiferromagnetism of rare-earth metals

1964 ◽  
Vol 82 (3) ◽  
pp. 449-498 ◽  
Author(s):  
Konstantin P. Belov ◽  
R.Z. Levitin ◽  
S.A. Nikitin
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals
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