E. G. Bushueva, E. A. Drobyaz, M. G. Golkovsky, V. A. Bataev, E. V. Domarov, A. A. Dudareva
{"title":"Structure and Abrasive Wear Resistance of Stainless-Steel Surface Layers Alloyed with Boron","authors":"E. G. Bushueva, E. A. Drobyaz, M. G. Golkovsky, V. A. Bataev, E. V. Domarov, A. A. Dudareva","doi":"10.3103/S1068366623060041","DOIUrl":null,"url":null,"abstract":"<p>The structure, microhardness, and tribological properties of coatings obtained in the process of surfacing of powder mixtures by an electron beam ejected into an air atmosphere are studied. For surfacing, we used a powder mixture containing amorphous boron and a wetting component, the role of which was played by Fe, Cr and Ni powder particles. The function of protecting the molten material from the air atmosphere was performed by MgF<sub>2</sub> flux. The thickness of the formed coatings reached 2.3–2.8 mm. The maximum level of microhardness of coatings reaches ~1500 HV. The main mechanism of hardening of such is due to the presence in the material of up to 90% (volume) particles of the hardening phase. It is shown that chromium borides Cr<sub>2</sub>B and (Fe,Cr)<sub>2</sub>B play the role of a hardening phase in the γ-phase (Ni, Fe solid solution). Chromium is contained in the alloying powder mixture and the base material. During the cladding process, chromium diffuses and forms borides. This process occurs due to the greater affinity of chromium for boron than nickel and iron. It has been established that chromium containing coatings have maximum wear resistance under various abrasive conditions. The wear resistance of coatings increased by 5 times compared to stainless steel 12Х18Н9T under friction with fixed abrasive particles. The wear resistance of hardened layers under conditions of gas and hydroabrasive action at low angles of attack (15°, 20°) increased by 6 and 2 times, respectively.</p>","PeriodicalId":633,"journal":{"name":"Journal of Friction and Wear","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Friction and Wear","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.3103/S1068366623060041","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The structure, microhardness, and tribological properties of coatings obtained in the process of surfacing of powder mixtures by an electron beam ejected into an air atmosphere are studied. For surfacing, we used a powder mixture containing amorphous boron and a wetting component, the role of which was played by Fe, Cr and Ni powder particles. The function of protecting the molten material from the air atmosphere was performed by MgF2 flux. The thickness of the formed coatings reached 2.3–2.8 mm. The maximum level of microhardness of coatings reaches ~1500 HV. The main mechanism of hardening of such is due to the presence in the material of up to 90% (volume) particles of the hardening phase. It is shown that chromium borides Cr2B and (Fe,Cr)2B play the role of a hardening phase in the γ-phase (Ni, Fe solid solution). Chromium is contained in the alloying powder mixture and the base material. During the cladding process, chromium diffuses and forms borides. This process occurs due to the greater affinity of chromium for boron than nickel and iron. It has been established that chromium containing coatings have maximum wear resistance under various abrasive conditions. The wear resistance of coatings increased by 5 times compared to stainless steel 12Х18Н9T under friction with fixed abrasive particles. The wear resistance of hardened layers under conditions of gas and hydroabrasive action at low angles of attack (15°, 20°) increased by 6 and 2 times, respectively.
期刊介绍:
Journal of Friction and Wear is intended to bring together researchers and practitioners working in tribology. It provides novel information on science, practice, and technology of lubrication, wear prevention, and friction control. Papers cover tribological problems of physics, chemistry, materials science, and mechanical engineering, discussing issues from a fundamental or technological point of view.