摘要
采用硬度测量、光学显微镜、X射线衍射及透射电镜 (TEM)等试验方法 ,研究了喷射成形Cu 1 5Ni 8Sn合金的时效硬化。结果表明 ,合金的时效硬化与其相组成及转变过程有关。有 3个过程影响合金硬化 ,即Spinodal调幅分解、亚稳γ′ (Cux,Ni1 -x) 3Sn相 (DO2 2 有序结构 )的形成及不连续沉淀γ (Cux,Ni1 -x) 3Sn相 (DO3有序结构 )的析出 ,前两者对硬化具有促进作用 ,而后者对硬化产生不利影响。
ST5”BZ]The age hardening of spray deposited Cu-15Ni-8Sn alloy has been investigated by means of hardness measurement,optical microscope,X-ray diffraction and transmission electron microscope.The results show that the age hardening of alloy is related to the phase formation and phase transformation during aging treatment and determined by the three processes which are spinodal modulation decomposition,the formation of metastable γ′-(Cu x,Ni 1-x ) 3Sn phase(DO 22 ordered structure)and discontinuous precipitation of γ-(Cu x,Ni 1-x ) 3Sn phase (DO 3 ordered structure).The former two processes promote the hardening in alloy while the latter one process has the negative effect on the hardening.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2000年第9期6-8,共3页
Heat Treatment of Metals
