CAJ | 학술논문

采用Gleeble-3500D热模拟机,用电场快速烧结的方法制得W-Cu合金.通过对烧结压坯的密度、显微结构以及硬度的分析,研究了压力对W-Cu合金烧结的影响.结果表明:W-Cu合金在800 ℃、3 min内快速烧结可获得晶粒较细小、显微组织较均匀的烧结体;在10～30 MPa范围内加压能有效促进烧结体的致密化,可获得相对密度为92.60% ～ 94.84%的W-Cu合金烧结体.但是随着压力的增加,烧结体的相对密度增加不明显.压力可使该烧结体显微硬度增高.
채용Gleeble-3500D열모의궤,용전장쾌속소결적방법제득W-Cu합금.통과대소결압배적밀도、현미결구이급경도적분석,연구료압력대W-Cu합금소결적영향.결과표명:W-Cu합금재800 ℃、3 min내쾌속소결가획득정립교세소、현미조직교균균적소결체;재10～30 MPa범위내가압능유효촉진소결체적치밀화,가획득상대밀도위92.60% ～ 94.84%적W-Cu합금소결체.단시수착압력적증가,소결체적상대밀도증가불명현.압력가사해소결체현미경도증고.
W-Cu alloys were prepared by the electric-field-assisted rapid sintering method using the Gleeble-3500D thermal simulation equipment under various pressures.The effects of pressure on the sintering of W-Cu alloy were studied through analyzing the density,microstructure and hardness of the obtained W-Cu sinters.The results show that W-Cu alloys with fine grains and homogeneous microstructure are obtained after rapid sintering at 800 ℃ for 3 min; With the application of pressure in the range of 10～30 MPa,the densification of sinters is effectively promoted,resulting in the formation of sinters with relative density of 92.6%～94.84%.The density of sinters is increased significantly after 10 MPa pressure is applied,however,the density increases at a much lower rate with increasing pressure further.Moreover,pressure application increases the microhardness of W-Cu alloys.