铸造技术2016，Vol.37Issue(9)：1815-1817,3.DOI:10.16410/j.issn1000-8365.2016.09.004
一种Cr25系耐热钢的组织及磨损行为研究
Study on Microstructure and Wear Behavior of Cr25 Heat Resistant Steel
摘要
Abstract
The microstructure and properties of the Cr25 heat resistant steel were investigated.The microstructure was analyzed by optical microscopy (OM),X-ray diffraction (XRD) and scanning electron microscopy (SEM).And the mechanical properties were conducted by a universal mechanical testing machine.The friction and wear features at room temperature,100 ℃ and 260 ℃,respectively were studied using a friction and wear tester method.The results show that the Cr25 heat resistant steel consists of α-Fe and (Fe·Cr)23C6 (KI)carbide phases.Tensile strength at room temperature is high and the ductility is poor,and the impact toughness is lower than 6 J/cm2.The wear mechanism of the alloy is abrasive wear at room temperature.With the increase of wear temperature,the friction heat effect is enhanced,and the wear mechanism of the alloy is gradually changed into abrasive grain and adhesive wear.The friction coefficient decreases gradually from 0.6 to 0.35 with the increase of temperature from room temperature to 260 ℃.And the friction coefficient does't change significantly with the prolonging of the wear time.The wear quantity decreases with the increase of the wear temperature.关键词
耐热钢/组织/摩擦磨损特性/磨损机制Key words
heat resistant steel/microstructure/friction and wear properties/wear mechanism分类
矿业与冶金引用本文复制引用
索忠源,付立铭,张瑞娜,安淼,张国芳,王毅坚,单爱党..一种Cr25系耐热钢的组织及磨损行为研究[J].铸造技术,2016,37(9):1815-1817,3.基金项目
吉林化工学院项目(15072) （15072）
上海市国资委(2013019) （2013019）
上海市科委(13231201901) （13231201901）
上海市科委(15DZ1205901) （15DZ1205901）
