Effects of Rare Earth on the Impact Toughness of High-Carbon Steel

2011 ◽  
Vol 284-286 ◽  
pp. 1223-1227
Author(s):  
Cheng Jun Liu ◽  
Hong Liang Liu ◽  
Chun Long Li ◽  
Mao Fa Jiang
Keyword(s):  
Rare Earth ◽  
Carbon Steel ◽  
Impact Toughness ◽  
Internal Friction ◽  
High Carbon Steel ◽  
The State ◽  
Sulfide Inclusion ◽  
High Carbon ◽  
Friction Curve ◽  
The Impact

The effects and mechanism of cerium, lanthanum and cerium-lanthanum alloys on microstructure and the impact toughness of high-carbon steel were studied in the present work. For high-carbon steel, the state and the content of RE were measured, and the effects and the mechanism of RE on sulfide inclusions, microstructure and the impact toughness of steel were determined. With increasing the RE addition, the sulfide inclusion can be changed from strip-like, spindle, ellipsoidal and spheric in shape. Strip-like sulfide disappears in high-carbon steel with the RE addition being 0.05%. A small quantity of RE can fine the austenitic grain, decrease the height of the SKK peak of the internal friction curve, and improve the impact toughness of high-carbon steel evidently. And the effects of lanthanum on fining the austenitic grain and improving the impact toughness is the largest, next to that of cerium-lanthanum alloys, and that of cerium is the least, which can be verified by the internal friction experiments.

Study on Lining Board with Bimetal Liquid Composite Casting

2011 ◽  
Vol 317-319 ◽  
pp. 158-161 ◽  
Author(s):  
Shou Fan Rong ◽  
Yong Chang Zhu ◽  
Chun Yan Shi ◽  
Chun Ying Tian ◽  
Feng Yu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Carbon Steel ◽  
Impact Toughness ◽  
High Carbon Steel ◽  
High Carbon ◽  
Casting Technique ◽  
Chemical Constitution ◽  
Composite Casting ◽  
The Impact ◽  
Bimetal Composite

The effect of chemical constitution, casting technique and heat treatment parameters on microstructure, properties and wearing resistance of the bimetal composite were primarily researched by SEM, EDAX, TEM etc.. The results showed that the higher impact toughness at bimetal combination region than corresponding part of the high carbon steel was obtained. The impact toughness was 23J/cm2 and the hardness of resistant surface was HRC59. The high carbon steel region initiated the impact fracture, however its abrasion resistance was substantially improved over double than Mn13.

Internal friction in a martensitic high-carbon steel

2001 ◽  
Vol 81 (12) ◽  
pp. 2797-2808
Author(s):  
Rustem Bagramov, Daniele Mari, Willy Benoi
Keyword(s):  
Carbon Steel ◽  
Internal Friction ◽  
High Carbon Steel ◽  
High Carbon

Internal friction in a martensitic high-carbon steel

2001 ◽  
Vol 81 (12) ◽  
pp. 2797-2808 ◽  
Author(s):  
R. Bagramov ◽  
D. Mari ◽  
W. Benoit
Keyword(s):  
Carbon Steel ◽  
Internal Friction ◽  
High Carbon Steel ◽  
High Carbon

Effectiveness assessment of pre-heating application at thermo-resistant alloy surfacing upon tool steel

2021 ◽  
Vol 2021 (6) ◽  
pp. 3-11
Author(s):  
Sergey Fastov ◽  
Il'ya Zorin ◽  
Vladimir Lysak ◽  
Valentin Kharlamov
Keyword(s):  
Carbon Steel ◽  
Thermal Effect ◽  
Tool Steel ◽  
High Carbon Steel ◽  
Heating Effect ◽  
High Carbon ◽  
High Alloy ◽  
Effectiveness Assessment ◽  
The Impact ◽  
Alloy Metal

There is considered a pre-heating effect upon the structure of wear-resistant alloys deposited upon 5HNM pressed tool steel by the method of an oscillating method. The results of investigations of transfer areas formed between deposited high-alloy metal and high-carbon steel are presented. The peculiarities in area structure formation of thermal effect under the impact of heating are defined.

Effects of Ce or Nb Addition on Nucleation of Pearlite in High Carbon Steel

2013 ◽  
Vol 734-737 ◽  
pp. 1531-1535 ◽  
Author(s):  
Yu Liang ◽  
Zhi Yi Shi ◽  
Yi Long Liang
Keyword(s):  
Rare Earth ◽  
Carbon Steel ◽  
Strain Energy ◽  
High Carbon Steel ◽  
Pearlitic Steel ◽  
Activation Energies ◽  
High Carbon ◽  
Pearlitic Transformation ◽  
Proeutectoid Ferrite ◽  
Nb Addition

The high-carbon steel was micro-alloying by Ce and Nb respectively, and the effect of micro-alloying on the nucleation of pearlite was reported in the present work. The results show that the pearlite could nucleate in rare earth sulfide inclusions and Nb-containing precipitates. The formation of NbC caused the C-depleted zone, promote the formation of proeutectoid ferrite of the pearlite. And the strain energy caused by rare earth sulfide inclusions will provide activation energies for pearlitic transformation. The inclusion and precipitates will increase the rate of nucleation of pearlite and refined the microstructures of pearlitic steel.

Influence of the Structural Parameters of High-Carbon Steel on the Impact Strength

2018 ◽  
Vol 48 (12) ◽  
pp. 812-817 ◽  
Author(s):  
E. V. Parusov ◽  
S. I. Gubenko ◽  
A. B. Sychkov ◽  
I. N. Chuiko ◽  
L. V. Sagura ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Impact Strength ◽  
Structural Parameters ◽  
High Carbon Steel ◽  
High Carbon ◽  
The Impact

Effect of Ultrasonic Treatment Time on Inclusions in High Carbon Steel

2011 ◽  
Vol 194-196 ◽  
pp. 336-340 ◽  
Author(s):  
Jie Lie ◽  
Cheng Ling Ge ◽  
Hai Chuan Wang ◽  
Ling Li ◽  
Qi Xuan Rui ◽  
...  
Keyword(s):  
Rare Earth ◽  
Carbon Steel ◽  
Oxygen Content ◽  
Ultrasonic Treatment ◽  
Treatment Time ◽  
High Carbon Steel ◽  
Average Diameter ◽  
High Carbon ◽  
Total Oxygen ◽  
Total Oxygen Content

Effect of ultrasonic treatment time on inclusions in high carbon steel with the addition of pure rare earth Ce was investigated. The results showed that ultrasonic treatment could disperse, refine and remove inclusions in molten high carbon steel with rare earth. With the increase of ultrasonic treatment time, total oxygen content of high carbon steel and average diameter of inclusions decreased evidently, inclusions in high carbon steel could be removed in a certain degree, but the number of the inclusions increased significantly. Total oxygen content (mass fraction) of high carbon steel, equivalent number I and average diameter d of inclusions in ingot was respectively 59×106, 134 entries•mm-2 and 2.91 μm when the ultrasonic treatment time was 60 s, at the same time, the percentage of inclusions with diameter D＜2.31 μm is up to more than 43 % of the total.

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