粉末冶金技术2026，Vol.44Issue(1)：120-125,6.DOI:10.19591/j.cnki.cn11-1974/tf.2024120001
Co和Mo含量对金属注射成形高合金超高强度钢力学性能的影响
Effect of Co and Mo content on mechanical properties of metal injection molding high alloy ultra-high strength steels
黄漫 1严晓芃 2乐晨 2唐明强2
作者信息
- 1. 北京钢研大慧科技发展有限公司,北京 100081
- 2. 泉州天智合金材料科技有限公司,泉州 362000
- 折叠
摘要
Abstract
Based on the traditional martensitic aging steels,a new type of high alloy ultra-high strength steel powders(Fe-18.0Co-15.0Ni-8.0Mo-3.0Cr-0.5Cu-0.4Nb-0.4V-0.2Al)was designed by increasing the content of Co and Mo elements.The high alloy ultra-high strength steel powders were prepared by water-gas combined atomization method.The sintered samples were prepared by metal powder injection molding process,and then subjected to solution treatment,deep cryogenic treatment,and aging treatment.The raw material powders and high alloy ultra-high strength steel samples were observed and tested by laser particle size distribution analyzer,scanning electron microscope,and universal mechanical testing machine.The results show that the raw material powders prepared by water-gas combined atomization method have the high sphericity,the content of each element in the powders is close to the designed composition,and the content of impurity elements is low.The relative density of the high alloy ultra-high-strength steel samples prepared by metal powder injection molding reaches 98.7％with the excellent mechanical properties.The yield strength is 1824 MPa,the tensile strength is 2053 MPa,and the elongation is 7.9％.Compared with the traditional 18Ni(200)martensitic aging steels,the prepared samples show more outstanding comprehensive mechanical properties.关键词
超高强度钢/水气联合雾化/金属注射成形/力学性能Key words
ultra-high strength steels/water-gas combined atomization/metal injection molding/mechanical properties分类
矿业与冶金引用本文复制引用
黄漫,严晓芃,乐晨,唐明强..Co和Mo含量对金属注射成形高合金超高强度钢力学性能的影响[J].粉末冶金技术,2026,44(1):120-125,6.
