• high temperature fracture behavior of tungsten fiber reinforced copper matrix composites under dynamic compression

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 555
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     wf/cu82al10fe4ni4 composite was fabricated by flow casting method. dynamic compression tests with strain rate of 1600 s−1 at 20 °c, 200 °c, 400 °c and 600 °c were finished by means of split hopkinson pressure bar (shpb). the results showed that the composites possessed obvious high temperature softening behaviors. the damages of wf/cu82al10fe4ni4 composites all occurred within the tungsten fibers when compressed at 20 °c, 200 °c and 400 °c, indicating that the interface strength of the composites was high. while the damages of the composites occurred either in the tungsten fibers or in the matrix at 600 °c, in addition, the melt of matrix alloy also occurred. microstructure of the composites after dynamic compressing at 600 °c was analyzed by transmission electron microscope (tem), observation revealed that there were a lot of high-density dislocations, stacking faults and twins existing in the matrix. it was also found that the precipitated phase in the matrix played the role of the second phase strengthening.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین رویدادها