The propagation behavior of short and long fatigue cracks emanating from notches in specimens of a TiB_2 particulate reinforced ZA-8 Zn metal matrix composite(MMC) and the corresponding constituent matrix material was studied.

• 研究了TiB2颗粒增强锌基合金及其基体材料中由缺口起始的疲劳短、长裂纹的扩展行为。