【作者】 郑林祥； 许哲峰； 于金库； 王志远； 王鹏； 乔琪； 李晓普；

【Author】 ZHENG Linxiang;XU Zhefeng;YU Jinku;WANG Zhiyuan;WANG Peng;QIAO Qi;Li Xiaopu;State Key Lab of Metastable Materials Science&Technology,Yanshan University;Hebei Key Lab for Optimizing Metal Product Technology and Performance,Yanshan University;

【机构】 燕山大学亚稳材料制备技术与科学国家重点实验室； 燕山大学河北省金属产品工艺与性能综合优化实验室；

【摘要】 本文主要以304L不锈钢粉末和VGCF作为基体和增强相,优化了行星球磨混料工艺,并通过放电等离子烧结(SPS)方法制备了304L不锈钢烧结体和2vol.%纳米碳纤维(VGCF)/304L不锈钢复合材料,同时对其进行了相含量、晶粒尺寸和力学性能的评价。实验结果表明:优化后的混料工艺在950℃保温10min条件下SPS制备的304L不锈钢烧结体和2vol.%VGCF/304L不锈钢复合材料,其维氏硬度分别为244 HV和310 HV,提高了约27.0%,屈服强度分别为587.1 MPa和890.2 MPa,提高了约51.6%,极限抗拉强度分别为821.5 MPa和1064.7 MPa,提高了约29.6%。更多还原

【Abstract】 In this paper,304L stainless steel powder and VGCF were used as the matrix and reinforcing phase,the planetary grinding mixing process was optimized,and 304L stainless steel sintered body and 2vol.% nanocarbon fiber(VGCF)/304L stainless steel composite were prepared by discharge plasma sintering(SPS) method. The phase content,grain size and mechanical properties were also evaluated. The experimental results show that:The Vickers hardness of 304L sintered stainless steel and 2vol.%VGCF/304L stainless steel composite prepared by SPS under the condition of 950℃ for 10 min after the optimized mixing process is 244 HV and 310 HV respectively,which increases by about 27.0%. The yield strength was 587.1 MPa and 890.2 MPa,and the ultimate tensile strength was 821.5 MPa and 1064.7 MPa,respectively,with an increase of about 51.6%.更多还原