{"title":"B4C用量对机械合金化al -石墨/B4C杂化复合材料磨损行为的影响","authors":"I. Şimşek","doi":"10.30728/BORON.556707","DOIUrl":null,"url":null,"abstract":"In this study, wear behavior of composite materials produced by mechanical alloying method adding different amounts of B 4 C to Al-Graphite matrix were investigated. After adding 2% (vol.) graphite to the aluminum matrix, 3 different amounts (3%, 6% and 9%) of B 4 C were added. The composite powders prepared were mechanically alloyed for 60 minutes. The milled powders were cold-pressed under 700 MPa pressure. The green compacts produced were sintered at 600 °C for 120 minutes. The sintered B 4 C reinforced aluminum composite materials (AMCs) are characterized by the scanning electron microscope (SEM+EDS), X-ray diffraction (XRD), and hardness and density measurements. Wear tests were performed on a standard pin-on-disc wear testing device with a load of 20 N at a sliding speed of 0.5 ms -1 and four different sliding distances (250-1000 m). As a result of the studies, the hardness increases as the amount of B 4 C in the composite material increases, while the density of AMC decreases. As a result of the wear tests, the highest weight loss was obtained in the non-reinforced AlGr matrix alloy, while the lowest weight loss was obtained in 9% B 4 C reinforced composite materials. However, it was observed that there was a decrease in the friction coefficient with increasing amount of reinforcement.","PeriodicalId":431027,"journal":{"name":"Journal of Boron","volume":"329 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"15","resultStr":"{\"title\":\"The Effect of B4C Amount on Wear Behaviors of Al-Graphite/B4C Hybrid Composites Produced by Mechanical Alloying\",\"authors\":\"I. Şimşek\",\"doi\":\"10.30728/BORON.556707\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this study, wear behavior of composite materials produced by mechanical alloying method adding different amounts of B 4 C to Al-Graphite matrix were investigated. After adding 2% (vol.) graphite to the aluminum matrix, 3 different amounts (3%, 6% and 9%) of B 4 C were added. The composite powders prepared were mechanically alloyed for 60 minutes. The milled powders were cold-pressed under 700 MPa pressure. The green compacts produced were sintered at 600 °C for 120 minutes. The sintered B 4 C reinforced aluminum composite materials (AMCs) are characterized by the scanning electron microscope (SEM+EDS), X-ray diffraction (XRD), and hardness and density measurements. Wear tests were performed on a standard pin-on-disc wear testing device with a load of 20 N at a sliding speed of 0.5 ms -1 and four different sliding distances (250-1000 m). As a result of the studies, the hardness increases as the amount of B 4 C in the composite material increases, while the density of AMC decreases. As a result of the wear tests, the highest weight loss was obtained in the non-reinforced AlGr matrix alloy, while the lowest weight loss was obtained in 9% B 4 C reinforced composite materials. However, it was observed that there was a decrease in the friction coefficient with increasing amount of reinforcement.\",\"PeriodicalId\":431027,\"journal\":{\"name\":\"Journal of Boron\",\"volume\":\"329 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-06-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"15\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Boron\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.30728/BORON.556707\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Boron","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.30728/BORON.556707","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 15
摘要
研究了在al -石墨基体中加入不同量的b4c,采用机械合金化法制备的复合材料的磨损行为。在铝基体中加入2%(体积)的石墨后,加入3种不同量(3%、6%和9%)的b4c。将制备的复合粉末机械合金化60分钟。研磨后的粉末在700 MPa的压力下进行冷压。在600°C下烧结120分钟。采用扫描电镜(SEM+EDS)、x射线衍射(XRD)、硬度和密度测试对烧结后的b4c增强铝复合材料(AMCs)进行了表征。在标准的针盘式磨损试验装置上,在载荷为20 N的条件下,在滑动速度为0.5 ms -1、4种不同滑动距离(250 ~ 1000 m)下进行了磨损试验。研究结果表明,复合材料的硬度随着b4c含量的增加而增加,而AMC的密度则降低。磨损试验结果表明,未增强alcr基合金的重量损失最大,而9% b4c增强复合材料的重量损失最小。然而,观察到摩擦系数随增强量的增加而降低。
The Effect of B4C Amount on Wear Behaviors of Al-Graphite/B4C Hybrid Composites Produced by Mechanical Alloying
In this study, wear behavior of composite materials produced by mechanical alloying method adding different amounts of B 4 C to Al-Graphite matrix were investigated. After adding 2% (vol.) graphite to the aluminum matrix, 3 different amounts (3%, 6% and 9%) of B 4 C were added. The composite powders prepared were mechanically alloyed for 60 minutes. The milled powders were cold-pressed under 700 MPa pressure. The green compacts produced were sintered at 600 °C for 120 minutes. The sintered B 4 C reinforced aluminum composite materials (AMCs) are characterized by the scanning electron microscope (SEM+EDS), X-ray diffraction (XRD), and hardness and density measurements. Wear tests were performed on a standard pin-on-disc wear testing device with a load of 20 N at a sliding speed of 0.5 ms -1 and four different sliding distances (250-1000 m). As a result of the studies, the hardness increases as the amount of B 4 C in the composite material increases, while the density of AMC decreases. As a result of the wear tests, the highest weight loss was obtained in the non-reinforced AlGr matrix alloy, while the lowest weight loss was obtained in 9% B 4 C reinforced composite materials. However, it was observed that there was a decrease in the friction coefficient with increasing amount of reinforcement.