摘要
本研究利用粉末冶金技术,首先将设计好的铁基合金成分,在中频感应炉中经高温熔炼合金化后,进行高压水雾化制取预合金粉末。然后再一次设计烧结合金化成分,并与预合金化粉末在球磨机中球磨混合,完成后加成型剂,压制成形,成形坯料在真空炉中进行第二次合金化烧结,制备了一种高硬度、高强韧性的铁基抗磨材料,测试的抗弯强度平均1940MPa,烧结态密度7.54g/cm^3,相对密度达到了97.9%~99%,烧结态硬度HRC59,冲击韧性10.6J/mm^2,它的抗磨耗磨损性能是高锰钢钢结硬质合金的1.3倍,测试的组织状态为碳化物+奥氏体+部分马氏体。
For this study , powder metallurgy technology was adopted. The pre-alloyed powder was prepared by high-pressure water atomization after the designed iron-based alloy composition was melted and alloyed in medium frequency induction furnace. Then , the sintering alloying composition was designed again , and mixed with pre-alloyed powder in ball mill. After that , the forming agent was added and the forming blank was pressed and sintered in vacuum furnace for the second time. A kind of iron-based anti-wear material with high hardness and high toughness was prepared. The average bending strength was 1 940 MPa , the sintered density was 7.54 g/cm^ 3 , and the relative density was 97. 9%~99%, sintered hardness HRC59 , impact toughness 10.6 J/mm^ 2 . Its wear resistance is 1.3 times that of high manganese steel-bonded cemented carbide. The structure state tested is carbide+austenite+partial martensite.
作者
张震宇
张春友
ZHANG Zhenyu;ZHANG Chunyou(Hunan Institute of Metallurgical Materials,Changsha 410014,China)
出处
《金属材料与冶金工程》
CAS
2019年第3期14-18,共5页
Metal Materials and Metallurgy Engineering
关键词
铁基合金
二次合金化
抗磨材料
iron-based alloys
secondary alloying
wear resistant materials
