scholarly journals Effect of Rare-Earth Elements on the Corrosion Resistance of Flux-Cored Arc-Welded Metal with 10CrNi3MoV Steel

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Kai Wang ◽  
Qinghua Lu ◽  
Zexin Jiang ◽  
Yaoyong Yi ◽  
Jianglong Yi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Electrochemical Impedance ◽  
Hsla Steel ◽  
High Strength ◽  
Cored Wire ◽  
Uniform Microstructure ◽  
Mechanical Properties And Corrosion

We modified the content of rare-earth elements (REE) in the flux-cored wire used to produce welds of high-strength low-alloy (HSLA) steel. The effect of REE addition on the microstructure as well as on the mechanical and electrochemical properties of the welded metal (WM) was investigated. REE-modified welded metals show very different responses during electrochemical impedance spectroscopy and the potentiodynamic polarization tests. The results indicate that the addition of REE of 0.3 wt.% facilitates a more uniform microstructure and improves both mechanical properties and corrosion resistance in welded metals.

Influence of Grain Size on Corrosion Resistance of a HSLA Steel

2012 ◽  
Vol 557-559 ◽  
pp. 143-146 ◽  
Author(s):  
Yan Tang Chen ◽  
Kai Guang Zhang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Corrosion Resistance ◽  
Mechanical Performance ◽  
Hsla Steel ◽  
High Strength ◽  
Corrosion Resistant ◽  
Hsla Steels ◽  
Mechanical Properties And Corrosion ◽  
Mn Steel

The mechanical performance, workability, weldability and corrosion resistance of structural high strength low alloy (HSLA) steels used in offshore engineering have been generally required. The effect of grain size on the corrosion resistant performance of a C-Mn structural steel has been investigated with stress on hunting a appropriate grain size to balance mechanical properties and corrosion resistant performance. The results showed that the C-Mn steel with grain size in 10～25μm scope provided expected mechanical properties and corrosion resistance.

Research on the Mechanical Properties and Corrosion Resistance of Mg-RE and Mg-Zn-Cu Alloys

2014 ◽  
Vol 633-634 ◽  
pp. 82-85
Author(s):  
Xin Hong Xiong ◽  
Dun Miao Quan ◽  
Jia Lin Chen ◽  
Qiao Xin Zhang ◽  
Yun Chen
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Magnesium Alloys ◽  
Casting Process ◽  
Gravity Casting ◽  
Cu Alloys ◽  
Mechanical Properties And Corrosion

Rare earth magnesium alloys and Mg-Zn-Cu alloys were prepared by gravity casting and direct squeezing casting respectively, and the corrosion performances of three kinds of Mg-Zn-Cu alloys were compared in this paper. The results indicate that adding rare earth elements and direct squeezing casting process can significantly increase the mechanical properties of magnesium alloys, and aluminum can improve the corrosion resistance of magnesium alloys.

Study on Aging Strengthening Behavior of ZK60 -2.0%Nd-1.0%Y Alloy

2010 ◽  
Vol 34-35 ◽  
pp. 1651-1655
Author(s):  
An Ru Wu ◽  
Li Jun Dong ◽  
Wei Guo Gao ◽  
Xiang Ling Zhou
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Rare Earth ◽  
Magnesium Alloy ◽  
Rare Earth Elements ◽  
Aging Process ◽  
Equilibrium Phase ◽  
High Strength ◽  
Treatment Method ◽  
Zk60 Alloy

The microstructure and mechanical properties of Mg-6.0%Zn-0.5%Zr (ZK60) and ZK60-2.0%Nd-1.0%Y alloys after extrusion, rolling and then T5 and T6 heat-treatment were investigated. The hardness and tensile strength at T5 and T6 condition were tested. The results show that the mechanical properties of ZK60--2.0%Nd-1.0%Y alloy are superior to that of ZK60 alloy. The hardness of the investigated alloy at T5 condition is higher than at T6. The strengthening of ZK60-2.0%Nd-1.0%Y alloy originates from the interaction of phase and dislocations. The precipitation order of ZK60-2.0%Nd-1.0%Y alloy is GP zone . The magnesium alloy contains rare earth elements with good casting performance, great potential for plastic deformation, high strength, excellent mechanical properties and many other advantages. The magnesium alloy oversaturation solid solution's decomposition process conforms to time the common alloy oversaturation solid solution decomposition order rule, often namely before separating out the equilibrium phase presents some transitional stage the structure, like the GP area, the transition are equal, but the different series magnesium alloy presents the different characteristic, therefore uses the heat treatment method also has big difference [1-5]. In this paper, we will analysis mechanical properties of aging process of testing and microstructure of Mg-6.0% Zn-0.5% Zr-2.0% Nd-1.0% Y alloy , do Research about strengthen the effect of melting and from the product of the relationship on different alloy aging process, and analysis contribution of rare earth elements Nd, Y to alloy strengthen.

scholarly journals Effect of combined surface treatment on quality and electrochemical corrosion properties of manganese phosphate on hsla steel domex 700

2018 ◽  
Vol 62 (2) ◽  
pp. 45-53 ◽  
Author(s):  
Kamil Borko ◽  
F. Pastorek ◽  
Jacková M. Neslušan ◽  
S. Fintová ◽  
B. Hadzima
Keyword(s):  
Corrosion Resistance ◽  
Surface Treatment ◽  
Electrochemical Impedance ◽  
Hsla Steel ◽  
Electrochemical Corrosion ◽  
High Strength Steels ◽  
High Strength ◽  
Corrosion Properties ◽  
Manganese Phosphate ◽  
Pre Treatment

Abstract The actual industrial trend is focused on weight reduction of constructions while preserving strength properties. For this purpose, conventional steel are replaced by high strength steels.. The aim of this study was to evaluate the effects of mechanical surface pre-treatment on corrosion resistance of high strength low alloy steel Domex 700 before and after surface treatment by manganese phosphating. Tested environment was 0,1M NaCl solution. Evaluation of mechanical pre-treatment and phosphating effects on corrosion resistance was realized by electrochemical measurements: potentiodynamic polarization measurements (Tafel analysis) and electrochemical impedance spectroscopy (equivalent circuits). From resulsts it is possible to conclude, that creation of manganese phosphate layer on ground and shot peened steel surface significantly increases the corrosion resistance of Domex 700 steel.

Effects of Cu on mechanical properties and corrosion resistance on (Ti36.1Zr33.2Ni5.8Be24.9)100-xCux alloys

2020 ◽  
Vol 10 (6) ◽  
pp. 812-818
Author(s):  
Xiangjie Yang ◽  
Xinhua Huang ◽  
Linhao Zhu ◽  
Hongmin Guo ◽  
Hualan Jin
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Thermal Properties ◽  
Plastic Strain ◽  
Yield Strength ◽  
Metallic Glass ◽  
High Strength ◽  
Mechanical Behaviors ◽  
Cu Content ◽  
Mechanical Properties And Corrosion

Due to high strength, perfect plasticity and higher hardness, bulk metallic glass (BMG) has been widely concerned. The work used the vaccum casting of copper-formed mold to establish (Ti36.1Zr33.2Ni5.8Be24.9)100-xCux, where x = 3, 5, 7, 9 and 11. Thermal properties, mechanical behaviors of compression, and corrosion resistance in the proposed compounds were investigated. The results show that the increase in Cu content enhances the heat resistance and the forming of glass of BMGs, small amount of fine dendritic crystals presents in BMG when x = 3, and the best corrosion resistance and mechanical properties can be obtained when x = 7, the yield strength, fracture strength and plastic strain can reach 1496.15 MPa, 2003.44 MPa and 19.19%, respectively.

Corrosion of New Wrought Magnesium Alloys

2005 ◽  
Vol 488-489 ◽  
pp. 839-844 ◽  
Author(s):  
Young Gee Na ◽  
Dan Eliezer ◽  
Kwang Seon Shin
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
Corrosion Behavior ◽  
Weight Ratio ◽  
Hot Extrusion ◽  
High Strength ◽  
Tensile Tests ◽  
Mechanical Properties And Corrosion ◽  
Extrusion Method

The development of new components with magnesium alloys for the automotive industry has increased in recent years due to their high potential as structural materials for low density and high strength/weight ratio demands. However, the limited mechanical properties of the magnesium alloys have led to search new kind of magnesium alloys for better strength and ductility. The main objective of this research is to investigate the mechanical properties and the corrosion behavior of new wrought magnesium alloys; Mg-Zn-Ag (ZQ) and Mg-Zn-Si (ZS) alloys. The ZQ6X and ZS6X samples were fabricated using hot extrusion method. Tensile tests and immersion tests were carried out on the specimens from the extruded rods, which contained different amounts of silver or silicon, in order to evaluate the mechanical properties and corrosion behavior. The microstructure was examined using optical and electron microscopy (TEM and SEM) and EDS. The results showed that the addition of silver improved the mechanical properties but decreased the corrosion resistance. The addition of silicon improved both mechanical properties and corrosion resistance. These results can be explained by the effects of alloying elements on the microstructures of the Mg-Zn alloys such as grain size and precipitates caused by the change in precipitation and recrystallization behavior.

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