In this study, thermal fatigue tests of high chromium steel material were carried out where test samples were heated to maximal temperatures of 500, 600, and …

The present work analyzes the effect of V, W, and different Cr contents on the microstructure and wear behavior of a high chromium white cast iron. The all …

Data on high-temperature oxidation was collected from a series of original reports and review papers 2,5,22,28,29,30,31,32,33,34,35,36,48. 237 unique rate constants were obtained with a total of ...

The cooling properties of different cooling mediums were studied and heat treatment of high chromium cast iron was carried out by different cooling mediums. The results showed that the maximum cooling rate, cooling rate at 300 °C and the quenching liquid cooling capacity of water at 20 °C was 193.6 °C/s, 88.6 °C/s and 2431.1, …

As a category of crucial wear-resistant alloys, high-chromium cast irons (HCCIs) are widely used in mining, minerals and cementation industries. The large volume fraction of coarse primary M7C3 carbides (PC) imparts excellent wear resistance. However, coarse carbides also induce brittleness, resulting in high cracking susceptibility, and …

High efficiency rate also with high chromium initial concentration; quicker and more sustainable than chemical coagulation processes; almost zero waste generation. ... Production of paper and board and other primary wood products: 9: 0.40: 0.0: 7: Animal and vegetable products from the food and beverage sector: 1: 0.16: 0.0: 7.a:

This paper summarizes the chromium pollution caused by ferrochrome industries, current remediation method adopted by ferrochrome industries, and the possible new methods for effective bioremediation. This paper focuses mainly on bioremediation techniques to convert the high-toxic form of chromium to less-toxic and mobile form of …

High-chromium cast iron are commonly used in industrial application, such as cement manufacturing, mining and mineral processing, due to their excellent abrasion wear resistance (Ref 1-3).The excellent wear resistance is associated with a great many of the hard eutectic carbides (M 7 C 3) and the microstructure of the martensitic matrix.The …

Occupational and environmental exposure to Cr (VI)-containing compounds is known to cause multiorgan toxicity such as renal damage, allergy and asthma, and cancer of the respiratory tract in humans [ 5, 144 ]. Breathing high levels of chromium (VI) can cause irritation to the lining of the nose, and nose ulcers.

In the present work, additions of 2% vanadium, 2% niobium and 2% titanium were respectively made to a high-chromium white iron (17% Cr) to analyse the effect of these elements on the as-cast structure of the alloy, and their influence on the material's hardness. This study was carried out for different solidification rates, so the alloys were …

High chromium white cast iron (HiCrWCI) is a family of Fe-based alloys with Cr and C contents in the order of 11 to 30 wt% and 1.8 to 3.6 wt%, respectively. An effective way to improve the wear performance is alloying with carbide forming elements to promote the formation of harder and well-distributed carbide species compared with M 7 C 3 ...

High-chromium vanadium–titanium magnetite (HCVTM) is a valuable resource containing metal elements such as iron, vanadium, titanium, and chromium. To recycle these elements, direct reduction is an efficient way. The mechanism and reaction kinetic parameters for the direct reduction of HCVTM were studied. Experimental results …

1 day agoIn a new Light: Advanced Manufacturing paper, scientists Dr.-Ing. Lei Zheng et al. from the Leibniz University Hannover have developed a low-cost and user-friendly fabrication technique, called UV ...

Corpus ID: 98167708. Effect of cerium on the as-cast microstructure of a hypereutectic high chromium cast iron. Qu Yinhu, J. Xing, +2 authors. H. Fu. Published …

@article{Feng2022MicrostructureAM, title={Microstructure and mechanical properties of composite strengthened high-chromium cast iron by laser quenching and laser shock peening}, author={Aixin Feng and Yacheng Wei and Bingjie Liu and Chun-Hung Chen and Xiaoming Pan and Jianjun Xue}, journal={Journal of Materials Research and …

Semantic Scholar extracted view of "Effect of cerium on the as-cast microstructure of a hypereutectic high chromium cast iron" by Qu Yinhu et al. ... The paper presents investigations of crystallization of modified hypoeutectic wear resistant chromium cast iron which contains carbon about 2% and chromium on three levels (12%, 18% and …

Whit cast irons, and specifically high chromium white cast irons, have been developed and deployed worldwide for making mechanical components of crushing and grinding machines due to the combination of high wear resistance and good mechanical strength. The paper is aimed to give an overview on the white cast iron alloys, and …

Dietary chromium absorption is low, ranging from about 0.4% to 2.5% [ 5, 6 ]. Ascorbic acid and prostaglandin inhibitors, such as aspirin, increase chromium absorption, whereas …

It has been evaluated the relationship between the microstructure and three-body abrasive wear behavior of high-chromium (18 and 27 mass % Cr) based (3 mass % each of V, Mo, W, and Co) multicomponent white cast iron materials (high-Cr MWCIs). It was also compared to MWCI to determine the service life of the materials. The results …

In this study, high chromium white iron (HC-Wi) alloy and the Hadfield steel were studied. The microstructure of this high-chromium iron was studied using Metallurgical optical microscopy (OM) and compared to the Hadfield steel. The hardness and unnotched charpy impact strength of the HC-Wi alloy and Hadfield steel were …

It has significant engineering practicability that refining the carbides as hard phase in hypereutectic high chromium cast iron. The high chromium cast iron samples during the course of solidification were treated with electric current pulse (ECP) from the temperature of 1350 °C and 1360 °C. The effects of ECP treatment of starting …

DOI: 10.1016/j.jmrt.2022.06.022 Corpus ID: 249556972; Effect of quench-tempering and laser quenching on the microstructure and properties of high-chromium cast iron @article{Chen2022EffectOQ, title={Effect of quench-tempering and laser quenching on the microstructure and properties of high-chromium cast iron}, author={Chun-Hung Chen …

High-chromium vanadium residue (HCVR (HCVR: high-chromium vanadium residue)) is an important secondary resource of valuable metals such as vanadium (V), chromium (Cr), and molybdenum (Mo). The mainstream technology for the utilization of HCVR, the Na2CO3-assisted-roasting–water-leaching method, usually …

The present article effectively summarizes the response mechanisms of plants toward chromium ion stress in multiple aspects, by reviewing the relevant …

The influence of heat treatment on microstructure and mechanical properties of high chromium white cast iron alloyed with titanium was investigated. The austenitizing temperatures of 980°C and 1150°C for 1 hour each followed by tempering at 260°C for 2 hours have been performed and the effect of these treatments on wear …

High-Chromium White Cast Iron is a material highly used in mining and drilling shafts for oil extraction, due to its high wear resistance. ... This paper stud ies the ef fects of differe nt ...

The components made out of hypereutectic high-chromium cast iron (HCCI), featured with high abrasion resistance and hardness, are usually subjected to dest ... The flat surfaces of samples were placed on a sandpaper disc of the abraser with a load of 1.5 kg. 120 grit SiC sand paper was used as abrasive material. The rotation speed of …

The growing use of heavy metals in most industrial activities has led to it being considered as the most important environmental pollutant that may cause harm and toxicity to animals and humans. Chromium has been found in the environment in different oxidation states such as Cr0, Cr(III), and Cr(VI) and is released from a variety of …

2 days agoA protocol using large-scale training of graph networks enables high-throughput discovery of novel stable structures and led to the identification of 2.2 million …

High-Chromium (9-12Cr) Steels: Creep Enhancement by Conventional Thermomechanical Treatments. There is a worldwide need to develop materials for advanced power plants with steam temperatures of 700°C and above which have the capacity to achieve high efficiency and low CO2 emissions. This….