烧结温度对多物理场耦合活化烧结制备WC-11Ni硬质合金的影响  

Effect of Sintering Temperature on WC-11Ni Cemented Carbides Fabricated by Coupled Multi-physical Fields Activated Sintering Technology

作　　者：姜薇 周宇[1] 尹德强[1] 杨屹[1] JIANG Wei ZHOU Yu YIN Deqiang YANG Yi(School of Manufacturing and Science, Sichuan University, Chengdu 610065, China)

机构地区：[1]四川大学制造科学与工程学院,四川成都610065

出　　处：《热加工工艺》2017年第20期72-74,共3页Hot Working Technology

基　　金：国家自然科学基金项目(51275322;51575369)

摘　　要：利用多物理场耦合活化烧结法在不同烧结温度(1050、1100、1150、1200℃)下制备WC-11Ni硬质合金。结果表明:随烧结温度的升高,WC颗粒尺寸轻微长大,试样的致密度逐渐升高,在1200℃时达到最高值97.5%;随烧结温度升高,显微硬度及断裂韧性增大,在1200℃时,分别达到最大值2087 HV30、8.402 MPa·m1/2。WC-11Ni cemented carbides were prepared under different sintering temperatures （1050, 1100, 1150, 1200℃） by coupled multi-physical fields activated sintering technology. The results show that with the increase of sintering temperature, the size of WC gain grows a little, and then, the relative density increases, and the relative density of the samples sintering at 1200℃ reaches the maximum value of 97.5%. Meanwhile, the hardness and fracture toughness increase with the sintering temperature increasing, the maximum values are 2087 HV30 and 8.402 MPa.m1/2 at 1200℃, respectively.

关 键 词：WC-11Ni 多物理场耦合活化烧结 烧结温度 显微硬度 韧性 

分 类 号：TG135.5[一般工业技术—材料科学与工程]