Effects of RE on Microstructure and Mechanical Properties of Low-Alloy Steel

2012 ◽  
Vol 557-559 ◽  
pp. 96-99
Author(s):  
Xiao Liu ◽  
Zhi Hui Li
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Electron Microscope ◽  
Impact Toughness ◽  
Earth Element ◽  
Impact Test ◽  
Low Alloy Steel ◽  
Metallographic Examination ◽  
The Impact ◽  
Scanning Electron

The effect of rare earth element on structure and mechanical properties of SS400 steel were studied by metallographic examination, scanning electron microscope (SEM), tensile test and impact test. The results show that rare earth can refine microstructure of SS400 steel. Fracture is changed from cleavage to ductile fracture by adding RE to SS400 steel. And the mechanical properties of SS400 are improved. The impact toughness value of SS400 steel (containing 0.02 RE) increases by 39.66% at -40°C, and at 0°C the impact toughness value increases by 31.05%, respectively comparing with that of steel without RE.

Effect of Rare Earth Metals on Microstructure and Impact Property of Duplex Stainless Steel

2013 ◽  
Vol 662 ◽  
pp. 424-427 ◽  
Author(s):  
Xiao Liu ◽  
Jing Long Liang
Keyword(s):  
Stainless Steel ◽  
Rare Earth ◽  
Impact Toughness ◽  
Duplex Stainless Steel ◽  
Earth Element ◽  
Impact Test ◽  
Rare Earth Metals ◽  
Transverse Impact ◽  
Metallographic Examination ◽  
2205 Duplex Stainless Steel

The effect of rare earth element on structure and mechanical properties of 2205 duplex stainless steel were studied by metallographic examination, scanning electron microscope (SEM), tensile test and impact test. The results show that the proper amount of rare earth can refine microstructure of 2205 duplex stainless steel. Fracture is changed from cleavage to ductile fracture by adding RE to 2205 duplex stainless steel. 2205 duplex stainless steel containing 0.05% RE can improve its impact toughness, and the transverse impact toughness is increased 15.56% at -20°C respectively comparing with that of 2205 duplex stainless steel without RE.

Effect of Rare Earth on Inclusions and Impact Property of Ferrite Stainless Steel

2012 ◽  
Vol 535-537 ◽  
pp. 662-665
Author(s):  
Xiao Liu ◽  
Zhi Jie Fan
Keyword(s):  
Stainless Steel ◽  
Rare Earth ◽  
Electron Microscope ◽  
Impact Property ◽  
Transverse Impact ◽  
Metallographic Examination ◽  
Dimple Fracture ◽  
The Impact ◽  
Scanning Electron

The effects of RE metals on the inclusions and the impact property of 430 ferrite stainless steel were studied by metallographic examination, scanning electron microscope (SEM) and energy spectrum analysis. The results show that the morphologies and sizes of inclusions in 430 ferrite stainless steel are changed, and RE played a very good role of modifying inclusions. The fracture mode of 430 ferrite stainless steel is typical cleavage fracture, but quasi-cleavage and dimple fracture after adding RE into the steel. The transverse impact property of 430 ferrite stainless steel is improved obviously by RE. In comparison with 430 ferrite stainless steel without RE, the transverse impact property of 430 ferrite stainless steel with RE is increased 38.53% at -20°C, respectively.

Research on Substitution of Molybdenum by Manganese in Low Alloyed Bainite Ductile Iron

2011 ◽  
Vol 299-300 ◽  
pp. 57-60
Author(s):  
De Qiang Wei ◽  
Ke Liu
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Electron Microscope ◽  
Impact Toughness ◽  
Ductile Iron ◽  
Retained Austenite ◽  
Room Temperature ◽  
The Matrix ◽  
The Impact ◽  
Scanning Electron

The low alloyed bainite ductile iron is obtained by alloying and austempering in room-temperature machine oil. The microstructure is investigated. The mechanical properties are discussed. In general, the number of white-bright zones and segregation is increasing with the increasing in the content of Mn, but the impact toughness is decreased. Therefore, the content of Mn is no more than 0.5 wt.%. The microstructure of bainite, martensite and a little retained austenite in the matrix of the ductile iron was investigated by scanning electron microscope (SEM). The hardness and impact toughness of the ductile iron subjected to heat-treatment are 54~56 HRC and 14.2 J/cm2, respectively. The substitution of 0.3~0.5wt.% Mo by 0.7~1.0 wt.% Mn can be realized in the bainite ductile iron.

Effect of the Neodymium Content on Mechanical Properties of the Electro-Brush Plated Nano-Al2O3/Ni Composite Coating

2012 ◽  
Vol 525-526 ◽  
pp. 277-280
Author(s):  
Guo Jin ◽  
Xiu Fang Cui ◽  
Er Bao Liu ◽  
Qing Fen Li
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Composite Coating ◽  
Nanoindentation Test ◽  
X Ray Diffraction ◽  
X Ray ◽  
Small Cracks ◽  
Scanning Electron

The effect of the neodymium content on mechanical properties of the electro-brush plated nanoAl2O3/Ni composite coating was investigated in this paper. The microstructure and phase structure were studied with scanning electron microscope (SEM) and X-ray diffraction (XRD). The hardness and abrasion properties of several coatings with different neodymium content were studied by nanoindentation test and friction / wear experiment. Results show that the coatings are much finer and more compact when the neodymium was added, and the hardness and abrasion property of the coatings with neodymium were improved obviously. Besides, the small cracks conduced by the upgrowth stress in the coatings were ameliorated when the rare earth neodymium was added. The improvement mechanism was further discussed.

Micro-Structural Studies of Leached SON-68-Type Glasses

2001 ◽  
Author(s):  
N. Ollier ◽  
G. Panczer ◽  
B. Champagnon ◽  
P. Jollivet
Keyword(s):  
Rare Earth ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Rare Earth Element ◽  
Earth Element ◽  
The Other ◽  
Structural Studies ◽  
Microscopic Features ◽  
Precipitated Phases ◽  
Scanning Electron

Abstract Two types of borosilicate leached SON68-type glasses were studied, one doped with uranium and the other with rare-earth element (Nd, Eu). Photoluminescence and cathodoluminescence properties of U doped samples have been correlated to microscopic features of the corroded glass. Nuclear analysis, Electronic Microprobe and Scanning Electron Microscope investigations revealed the heterogeneous composition of the gels with differentiated phases. Enriched U phases (crystallised or not) and phosphorus precipitated phases in rare earth gel have been detected.

Prediction and Verification of Compatibility of MMT Nanofiller in PA6 Matrix

2014 ◽  
Vol 635 ◽  
pp. 194-197 ◽  
Author(s):  
Branislav Duleba ◽  
Emil Spišák ◽  
Janusz W. Sikora ◽  
Ľudmila Dulebova
Keyword(s):  
Mechanical Properties ◽  
Electron Microscope ◽  
Impact Test ◽  
Mechanical Tests ◽  
Cloisite 30B ◽  
Sem Study ◽  
Hamaker Constants ◽  
Adhesion Work ◽  
Test Impact ◽  
Scanning Electron

This contribution deals about study of mechanical properties and compatibility between PA6 polymer as matrix and modified and unmodified montmorillonite clay nanofiller Cloisite. For this purposes in the first part of study the Hamaker constants, Adhesion work and B parameter for systems PA6/Cloisite 30B, PA6/Cloisite 93A and Pa6/Cloisite Na+ were calculated and compared. The second part of article consists of mechanical tests (tensile test, impact test) of moulded samples and Scanning Electron Microscope (SEM) study of these samples.

scholarly journals Pengaruh Kombinasi Terhadap Kekuatan Material Golok Sulangkar Campuran 10% Pegas 90% Baja SS 400

2021 ◽  
Vol 14 (1) ◽  
pp. 27-32
Author(s):  
Dedi Komarudin
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Impact Test ◽  
Hardness Test ◽  
Forging Process ◽  
Steel Material ◽  
The Impact ◽  
The Village ◽  
Over Time ◽  
Scanning Electron

The manufacture of tools such as machetes in Banten is still widely practiced, machetes are produced from a conventional forging process using a hammer by a blacksmith. Working as a blacksmith in the Banten area, especially in the village of the new village of lightning, was passed down from generation to generation as a traditional blacksmith, but over time the machetes produced by traditional blacksmiths began to be replaced by modern ones machete. The traditional golok of Kampung Baru Village, Petir, consists of two types, the regular machete and the sulangkar golok. The material commonly used by blacksmiths to make machetes is a vehicle spring sheet that is no longer used, while for making machetes, a blacksmith usually combines other materials during forging. The purpose of this study was to determine the differences in the mechanical and micro properties of the two types of golok, Banten cultural heritage. The research was carried out from the start of the search for the material, the manufacturing and forging processes and carried out testing. The results of the hardness test show that the value of the spring material is 423.1 HBW, SS 400 steel material 134.18 HBW, combination material or Sulangkar 735.15 HBW then the data results from the tensile test on steel material SS 400, Spring, Combination or Sulangkar are 442.52 MPa, 1334,60 MPa, 522.81 MPa. The results of the data from the impact test on Spring material, SS 400 steel, Combination or Sulangkar, namely 162 J, 34 J, 88 J. The results of automatic microscope testing and Scanning Electron Microscope (SEM) show the surface of the spring, SS 400 steel and combination materials.

Effects of Rare Earth Addition on the Inclusions and Mechanical Properties of 2205 Duplex Stainless Steel

2012 ◽  
Vol 503-504 ◽  
pp. 463-468 ◽  
Author(s):  
Xiao Liu ◽  
Long Mei Wang
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Rare Earth ◽  
Impact Toughness ◽  
Duplex Stainless Steel ◽  
Rare Earth Metals ◽  
Transverse Impact ◽  
Metallographic Examination ◽  
2205 Duplex Stainless Steel ◽  
Reduction Of Area

The effects of rare earth metals on the inclusions and the mechanical properties of 2205 duplex stainless steel were studied by metallographic examination, scanning electron microscope (SEM) and energy spectrum analysis. The results show that the morphologies and sizes of non-metallic inclusions in 2205 duplex stainless steel are changed, and rare earth metals played a very good role of modifying inclusions. The fracture mode of 2205 duplex stainless steel is typical cleavage fracture, but quasi-cleavage and dimple fracture after adding RE into the steel, and the spherical inclusions of rare earth oxysulfide in the dimple are the main factors for this transformation. The transverse impact toughness of 2205 duplex stainless steel is improved obviously by RE. In comparison with 2205 duplex stainless steel without RE, the transverse impact toughness of 2205 duplex stainless steel with RE is increased 20.49% at -40°C, and the room temperature strength are improved, the elongation and reduction of area have been improved 11.67%, 24.55% respectively.

Contributions of Rare Earth Element (La,Ce) Addition to the Impact Toughness of Low Carbon Cast Niobium Microalloyed Steels

2018 ◽  
Vol 24 (4) ◽  
pp. 773-788 ◽  
Author(s):  
Hadi Torkamani ◽  
Shahram Raygan ◽  
Carlos Garcia Mateo ◽  
Jafar Rassizadehghani ◽  
Yahya Palizdar ◽  
...  
Keyword(s):  
Rare Earth ◽  
Impact Toughness ◽  
Rare Earth Element ◽  
Earth Element ◽  
Microalloyed Steels ◽  
Low Carbon ◽  
The Impact

Effects of Rare Earth on Mechanical Properties of LZ50 Axle Steels and Its Formation Mechanism

2018 ◽  
Vol 37 (6) ◽  
pp. 509-519 ◽  
Author(s):  
Jin-ling Zhang ◽  
Yan-chong Yu ◽  
She-bin Wang ◽  
Yang Hou ◽  
Shu-chun Yin
Keyword(s):  
Mechanical Properties ◽  
Rare Earth ◽  
Impact Toughness ◽  
Fatigue Resistance ◽  
Formation Mechanism ◽  
Vacuum Induction Furnace ◽  
Lz50 Steel ◽  
Sharp Edges ◽  
Re Elements ◽  
The Impact

AbstractTo study the mechanism of rare earth (RE) elements on the mechanical properties of axle steels, trace RE were added to LZ50 axle steel, which was melted in vacuum induction furnace. By calculating the thermodynamic and kinetic of RE inclusions, the formation mechanism of inclusions was discussed. And the effects of RE elements on the microstructures and mechanical properties were investigated. The results show that RE and O elements in the molten steels diffused into the interface and increased the thickness of the liquid film. The inclusions transform into 1–3 μm spherical RE compound inclusions instead of 5 μm Al2O3-SiO2 with sharp edges. The grain sizes of the steels containing 0.0010 %～0.0026 % RE were decreased, impact toughness and fatigue resistance were improved greatly, compared with the steel without RE. The impact toughness and fatigue resistance of the LZ50 steel with the addition of 0.0010 % RE were increased by 1.65 and 2 times, respectively.

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