(1. 湖南大學(xué) 材料科學(xué)與工程學(xué)院，長沙 410082；
2. 株洲硬質(zhì)合金集團有限公司，株洲 412000)
摘 要: 硬質(zhì)合金在使用中一般同時承受多重疲勞的共同作用，了解硬質(zhì)合金的疲勞破壞機理和提高其疲勞性能是硬質(zhì)合金研究領(lǐng)域的一個重要方向。綜述各種硬質(zhì)合金工具在不同環(huán)境中的疲勞破壞情況，概括目前國內(nèi)外學(xué)者對硬質(zhì)合金疲勞性能的機理的研究進展。同時介紹本課題組在自行改造的疲勞試驗機上對硬質(zhì)合金多重疲勞開展的一些工作。
關(guān)鍵字: 硬質(zhì)合金；疲勞；裂紋擴展；斷裂
（1. College of Materials Science and Engineering, Hunan University, Changsha 410082, China;
2. Zhuzhou Cemented Carbide Group Co., Ltd., Zhuzhou 412000, China）
Abstract:In actual applications, the cemented carbides stand the multiple fatigue action. Understanding the fatigue mechanism and improving the fatigue property are the important direction for the research of cemented carbides. The applications and studies of fatigue and fracture of cemented carbides were reviewed. The domestic and foreign research results on the mechanism of fatigue fracture of cemented carbides were summarized, and the recent works of authors’ research group were also introduced.
Key words: cemented carbides; fatigue; crack propagation; fracture
