Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 36 Full PDFs related to this paper. Read Paper. Control Properties and microstructure of STEEL ARC WELDS.
Jun 28, 2021 · The effect of determining trace cerium elements in rocks and minerals is increased by more than 50%, based on deep learning. The algorithm studies the methods of target detection and recognition and integrates it into the intelligent robot used in this subject, giving the robot the ability to accurately detect the target object in real time. Austenite Grain Growth Behavior of AISI 4140 Alloy Steel Jan 29, 2015 · The growth behavior of austenite grains of AISI 4140 alloy steel was studied through heat insulation tests. On the basis of the experimental results, three main conclusions are stated as follows. The austenite grains become larger as the samples being held for longer time; meanwhile, the growth speed of austenite grain becomes slower.
Scholarly publications with full text pdf download. Related research topic ideas. to the concept of steel grain refinement by means of heterogeneous nucleation of acicular ferrite at non-metallic inclusions during the austenite to ferrite transformation. In Part II the conditions for cerium oxide and oxysulphide formation during Comparative study on the effect of Y content on grain Dec 01, 2019 · Effect of Y content on grain refinement in the simulated coarse-grained heat-affected zone of X70 steel was investigated. In-situ observation of austenite grain growth and microstructural transformation during thermal cycle.. The misorientation and crystallographic grain size of investigated steels with the EBSD analysis.
The present invention provides a high-strength thick steel plate having a plate thickness of 50 to 80 mm and a tensile strength of 490 to 570 MPa which is able to realize an excellent HAZ toughness even when welding with a heat input of 20 to 100 kJ/mm is conducted and is characterized by containing, by wt%, 0.03-0.14% of C, 0.30% or less of Si, 0.8-2.0% of Mn, 0.02% or less of P, 0.005% or Effect of Adding Cerium on Microstructure and Morphology May 09, 2017 · For sample with 0.0235 wt.% cerium and S/O ratio around 7, the type of inclusions will be large amount of cerium oxide, cerium oxy-sulfide, and small amount of cerium sulfide. As the binding capacity of Ce oxide and oxygen is greater than that of aluminum and oxygen, the liquid steel first produces CeAlO 3 , and the reaction equation is [Ce] + [Al] + 3[O] = CeAlO 3 .
The fraction of deoxidation particles of MgO, ZrO2 and Ce2O3 on austenite grain boundaries in an Fe10mass%Ni or Fe0.20mass%C0.02mass%P alloy has been Effect of Particle Size Distribution on Austenite Grain In this investigation, the austenite grain growth in an Fe0.05mass%C alloy deoxidized with MnSi, Ti, Mg, Zr and Ce has been studied as a function of holding time at 1200°C. The effect of deoxidants on size distribution of particles and austenite grains has been discussed based on the relationship between surface area of particles and that
size and inclusion density had to be 0.510mm and 310 104/mm3 respectively in order to adequately control the micro-structure. While it was reported that nonmetallic inclusions have a strong effect on the nucleation of ferrite, the mechanism behind this phenomenon was not estab-lished.6) Particle pinning of austenite grain boundaries during Effects of Rare Earth Metals on Steel Microstructures May 27, 2016 · Suppressing grain growth by pinning the austenitic grain boundary at high temperature with the help of oxides, sulfides, nitrides, and carbide; utilizing the inclusions dissolved in the austenite to affect the transformation from austenite to ferrite and induce intra-grain ferrite; improving the processing properties of steel by forming carbide
Aug 01, 2019 · Gladman had studied the pinning effect of the second phase particles on austenite grain and it could be eed as:D C = d ¯ V 6 f V (3 2 2 Z). Where D C is the grain diameter, d ¯ V is the second phase particle diameter, f V is the volume fraction, Z is the inhomogeneity factor. Effects of rare-earth micro-alloying on microstructures May 25, 2020 · During tempering, the thermal activation energy increased significantly with the increase in temperature, resulting in the carbon breaking away from the pinning points with the RE atoms. Consequently, the SKK peak value and width of RE-51CrV4 steel in the tempering state increased significantly ( Fig. 4 (a)).
A method of forming a metal supported solid oxide fuel cell comprising:a) applying an environmentally friendly anode layer comprising nickel oxide and rare earth doped ceria to a metal substrate; b) non-reducing the anode layer Pre-firing under conditions to form a composite; c) firing the composite in a reducing atmosphere to form a sintered cermet; d) providing an electrolyte; and e Micro-structure Refinement in Low Carbon High ation sites and for restraining the austenite grain growth by pinning. Suito et al. reported the pinning effect of oxide par-ticles on austenite grain growth, Ce2O3 and CeS in Fe-C alloy,35) MgO and ZrO 2 in Fe-10%Ni alloy. 6) Austenite grain size would be estimated by the equation proposed by Zener7) or Nisizawa et al.,8) which consist of
This effect cannot be attributed to any drastic changes in the austenite grain structure, nor to the inclusion content of the weld deposits (Babu and Bhadeshia, 1990). It turns out in fact, that the Cr and Mo alloys have highlighted a more general condition associated with welds containing large concentrations of austenite stabilising alloying Rare earth elements and their properties and their Dec 11, 2018 · 12/11/2018 22 Function of Cerium in Steel Cerium is widely applied in steel, in processes that can be classified into purification modification of inclusions and micro-alloys. Cerium has the ability to improve the cleanliness of steel, as, for example, it can deoxidize and desulfurize steel and prevent harm due to hydrogen, phosphor, arsenic