摘要：
Titanium metal matrix composite (Ti-MMC) has excellent features and capabilities which can be considered a potential candidate to replace commercial titanium and superalloys within an extensive range of products and industrial sectors. Regardless of the superior features in Ti-MMC, however, referring to several factors including high unit cost and existence of rigid and abrasive ceramic particles in the generated matrices of the work part, the Ti-MMC is grouped as extremely difficult to cut with a poor level of machinability. Furthermore, adequate process parameters for machining Ti-MMCs under several lubrication methods are rarely studied. Therefore, adequate knowledge of this regard is strongly demanded. Among machinability attributes, ultrafine particles (UFPs) and fine particles (FPs) have been selected as the main machinability attributes and the factors leading to minimized emission have been studied. According to experimental observations, despite the type of coating used, the use of higher levels of flow rate led to less UFPs, while no significant effects were observed on UFPs. Under similar cutting conditions, higher levels of FPs were recorded under the use of uncoated inserts. Moreover, cutting speed had no significant influence on UFPs; nevertheless, it significantly affects the FPs despite the type of insert used.%钛基复合材料(Ti-MMC)具有优异的特性和相容性,有望取代已广泛应用的商用钛和高温合金.尽管Ti-MMC具有优越的性能,但因生产成本高、工件基体的刚性和存在的磨料陶瓷颗粒等因素,被归类为加工性能差的极难切削材料.采用润滑方法加工Ti-MMCs的工艺参数很少被研究.考虑到可切削性能,选择了超细粒(UFPs)和细颗粒(FPs),研究了影响粉尘排放的因素.根据实验观察,无论使用哪种类型涂层,较高的流量水平会导致较少的超细粉,但没有观察到对细颗粒的显著影响.在类似的切削条件下,使用无涂层刀片时会排放较高水平的细颗粒.此外,切削速度对超细粉没有显著影响,但对细的颗粒有显著的影响,且与插入类型无关.
