scholarly journals Effect of micro-alloying on quenching behaviour of steels for back-up rolls

2017 ◽  
Vol 23 (2) ◽  
pp. 105 ◽  
Author(s):  
Andrea Di Schino ◽  
Maria Richetta
Keyword(s):  
Grain Size ◽  
Content Analysis ◽  
Residual Austenite ◽  
Laboratory Scale ◽  
Alloying Elements ◽  
Fabrication Cost ◽  
Cr Steels ◽  
Mo Content ◽  
Austenitic Grain Size ◽  
Effect Of Alloying

<p>The use of micro-alloyed steels for back-up rolls manufacturing gives the possibility to obtain advantages associated with the benefit of the application of micro-alloying elements and thermo-mechanical treatments. In this paper the effect of alloying elements has been evaluated aimed to improve steel hardenability and at the same time to reduce the fabrication cost. 3% Cr and 5% Cr steels are considered with a reduced Mo content. Analysis of alloying on hardenability is performed by means of metallurgical models and on laboratory scale. Results show a higher hardenability in the case of 5% Cr steels. Moreover, such family of steels also show a dependence on prior austenitic grain size. In both the steel families no warnings are detected in terms of residual austenite presence after quenching.</p>

The Effect of Annealing Conditions and Alloying Elements on the Microstructure Stability and Mechanical Properties of Mg-Zn-Cesheets

2014 ◽  
Vol 472 ◽  
pp. 937-947
Author(s):  
Mohammad Aljarrah ◽  
E. Essadiqi ◽  
Rami H. Fouad ◽  
M. Rababah ◽  
A. Almagableh
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Optical Microscopy ◽  
Microstructure Evolution ◽  
Alloying Elements ◽  
Industrial Scale ◽  
Recrystallization Process ◽  
Annealing Conditions ◽  
Microstructure Stability ◽  
Effect Of Alloying

In this work, four Mg-Zn-Ce sheets were processed on an industrial scale by “Helholtz-ZentrumGreesthacht” company. To study the effect of alloying elements and annealing conditions on the rolled sheets, these sheets were annealed at different conditions. Mechanical properties of these rolled and annealed sheets were determined in rolling and transverse directions. Optical microscopy was used to investigate microstructure evolution and stability as well as grain size after annealing. Annealing at 450°C, 1 hr for A and D sheets provides microstructure stability of these sheets. Whereas, annealing B and C sheets for one hour at 400 and 350°C, respectively, provide the optimum annealing conditions. In the studied alloys, the highest zinc (Zn) presence alloyed with magnesium significantly increases the grain size and the amount of precipitates. Whereas, the highest cerium (Ce) presence alloyed with magnesium, refines the grain size during the recrystallization process.

Effect of Alloying Elements on the High-Temperature Tempering of Fe-0.3N Martensite

2020 ◽  
pp. 116612
Author(s):  
Shao-Wen Young ◽  
Mitsutaka Sato ◽  
Kazuhiro Yamamitsu ◽  
Yusuke Shimada ◽  
Yongjie Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Alloying Elements ◽  
Effect Of Alloying

scholarly journals Effect of alloying elements on thermal stability of nanocrystalline Al alloys

2021 ◽  
Vol 31 (1) ◽  
pp. 11-23
Author(s):  
Hany Rizk AMMAR ◽  
Muneer BAIG ◽  
Asiful Hossain SEIKH ◽  
Jabair Ali MOHAMMED
Keyword(s):  
Thermal Stability ◽  
Al Alloys ◽  
Alloying Elements ◽  
Thermal Stability Of ◽  
Effect Of Alloying

Neuronet analysis of the effect of alloying elements on the radiation embrittlement of VVÉR-440 vessel materials

Atomic Energy ◽  
2006 ◽  
Vol 101 (5) ◽  
pp. 809-815 ◽  
Author(s):  
S. M. Obraztsov ◽  
G. A. Birzhevoi ◽  
Yu. V. Konobeev ◽  
V. A. Pechenkin ◽  
V. I. Rachkov
Keyword(s):  
Alloying Elements ◽  
Radiation Embrittlement ◽  
Effect Of Alloying

Research on Effects of Mo Element on the Magnetic Properties of 1J79 Alloy

2010 ◽  
Vol 160-162 ◽  
pp. 1787-1790
Author(s):  
Jing Cao ◽  
Yong Feng Wang ◽  
Chun Xue Wei
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Crystal Growth ◽  
Saturation Magnetization ◽  
Electron Probe ◽  
Electric Arc ◽  
Experimental Results ◽  
Vibrating Sample Magnetometer ◽  
Electron Probe Microanalyzer ◽  
Mo Content

1J79 alloy was prepared by vacuum electric arc smelting．The crystal growth and the content of impurity was observed by electron probe microanalyzer，and magnetic properties were measured by vibrating sample magnetometer(VSM)．Experimental results show that inclusions in the alloy are fewer and fewer, composition becomes more uniform with the increases of the Mo content, and grain size also becomes larger and larger with the increases of Mo content, to reduce coercivity. The small amount of Mo addition is useful to improve the saturation magnetization and reduce coercivity．

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