摘要
以纳米93W-4.9Ni-2.1Fe合金粉末为原料,研究放电等离子烧结温度对钨合金组织和动态力学性能的影响。结果表明,采用放电等离子烧结方法可制备出组织均匀的细晶钨合金。当烧结温度在950～1400℃时,随着烧结温度的增加,钨颗粒平均尺寸由2μm增大到10μm,试样动态抗压强度随之降低;动态压缩过程中,烧结温度在1000～1200℃的试样塑性均较好,而当烧结温度超过1300℃时,试样的塑性很低,表现为明显的脆性状态。
The effects of the spark plasma sintering temperature on microstructure and dynamic mechanical properties of the tungsten heavy alloy with nano-crystalline 93W-4.9Ni-2.1Fe alloy powder as raw material were investigated. Results show that ultra-fine tungsten alloy with uniform microstructure can be prepared by the spark plasma sintering technology. In the sintering temperature range between 950 degrees C and 1400 degrees C, the average particle size of the tungsten heavy alloy increases from 2 gm to 10 gm with the sintering temperature elevation while the dynamic compressive strength decreases accordingly. During the process of dynamic compression the plasticity of samples sintered at the temperature between 1000 degrees C and 1200 degrees C is good. However, dynamic plasticity of samples sintered at the temperature between 1300 degrees C and 1400 degrees C is almost zero, showing typical brittle failure.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2010年第10期1807-1810,共4页
Rare Metal Materials and Engineering
