{"title":"Oxidative wear assisted enhanced wear performance of spark plasma sintered in situ Fe-based bulk metallic glass composites","authors":"","doi":"10.1016/j.wear.2024.205485","DOIUrl":null,"url":null,"abstract":"<div><p>Current study reports the dry sliding wear behavior of Fe<sub>57</sub>Cr<sub>9</sub>Mo<sub>5</sub>B<sub>1</sub><sub><sub>6</sub></sub>P<sub>7</sub>C<sub>6</sub> (at. %) fully amorphous bulk metallic glass (BMG) and in situ BMG composites, synthesized via spark plasma sintering. Fully amorphous alloy and in situ amorphous-crystalline composites containing various amount of crystallinity with a relative density > 98% were fabricated via optimized sintering conditions. Effect of in situ induced crystalline phase content on wear behavior and wear mechanism was investigated. In situ crystallization of intermetallic phases such as Fe<sub>5</sub>PB<sub>2</sub>, Fe<sub>2</sub>B and Cr<sub>2</sub>B led to significant increase in the hardness of the composite samples up to 15.1 GPa from 10.1 GPa in the case of fully amorphous sample. Increase in crystallinity in the studied Fe-based amorphous-crystalline composites was found to have a positive effect on wear performance. In the BMG sample with completely amorphous phase, sliding wear induced debonding of the sintered particles along with surface oxidation. However, in the case of amorphous-crystalline composite samples, sliding wear caused the formation of oxide rich tribolayer that resulted in lower coefficient of friction and significantly lower wear rates compared to the fully amorphous sample. Coefficient of friction values assumed more than 50% decrease in the case of 20% amorphous composite sample in comparison to the fully amorphous sample. Wear rates of the current Fe-based amorphous-crystalline composite samples were found to be in the order of 10<sup>−7</sup> mm<sup>3</sup>/N.m, which are relatively lower compared to the recently reported Fe-based BMGs.</p></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Wear","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0043164824002503","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Current study reports the dry sliding wear behavior of Fe57Cr9Mo5B16P7C6 (at. %) fully amorphous bulk metallic glass (BMG) and in situ BMG composites, synthesized via spark plasma sintering. Fully amorphous alloy and in situ amorphous-crystalline composites containing various amount of crystallinity with a relative density > 98% were fabricated via optimized sintering conditions. Effect of in situ induced crystalline phase content on wear behavior and wear mechanism was investigated. In situ crystallization of intermetallic phases such as Fe5PB2, Fe2B and Cr2B led to significant increase in the hardness of the composite samples up to 15.1 GPa from 10.1 GPa in the case of fully amorphous sample. Increase in crystallinity in the studied Fe-based amorphous-crystalline composites was found to have a positive effect on wear performance. In the BMG sample with completely amorphous phase, sliding wear induced debonding of the sintered particles along with surface oxidation. However, in the case of amorphous-crystalline composite samples, sliding wear caused the formation of oxide rich tribolayer that resulted in lower coefficient of friction and significantly lower wear rates compared to the fully amorphous sample. Coefficient of friction values assumed more than 50% decrease in the case of 20% amorphous composite sample in comparison to the fully amorphous sample. Wear rates of the current Fe-based amorphous-crystalline composite samples were found to be in the order of 10−7 mm3/N.m, which are relatively lower compared to the recently reported Fe-based BMGs.
期刊介绍:
Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.