Effect of adding the Fe-Ni powder on the structure and properties of Fe-4Ni-0.4 C low-alloy steel
WANG Xinyue1, LI Songlin1, LIU Xiangyang1, YU Yongliang2, YUAN Yong2, ZHENG Risheng3
1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. Shandong Luyin New Material Technology Co., Ltd., Laiwu 271105, China; 3. Hunan Fortune New Material Co., Ltd., Changsha 410323, China
Abstract：Add Fe-20Ni pre-alloyed powder to replace part of Ni powder as Ni source to prepare powder metallurgy Fe-4Ni-0.4C low-alloy steel. Measure the density, hardness and tensile strength of low-alloy steel, observe and analyze the microstructure and structure of the material through optical microscope (OM), X-ray energy spectrum analysis (EDS) and scanning electron microscope (SEM). The effects of adding nanocrystalline Fe-20Ni pre-alloyed powders on the structure and properties of low-alloy steel were also studied. The results show that the addition of Fe-20Ni pre-alloyed powders can make the alloy structure evenly distributed, and reduce the enrichment of Ni. When the addition amount of Fe-20Ni pre-alloyed powders (mass fraction, the same below) is 10%, and the pressing pressure is 800 MPa, the overall mechanical properties of the alloy are the best. Compared with the material without Fe-20Ni pre-alloyed powders, the tensile strength is increased by 14.9 MPa.
王新月, 李松林, 刘向阳, 于永亮, 袁勇, 郑日升. 添加Fe-Ni粉对Fe-4Ni-0.4C低合金钢组织与性能的影响[J]. 粉末冶金材料科学与工程, 2021, 26(5): 428-435.
WANG Xinyue, LI Songlin, LIU Xiangyang, YU Yongliang, YUAN Yong, ZHENG Risheng. Effect of adding the Fe-Ni powder on the structure and properties of Fe-4Ni-0.4 C low-alloy steel. Materials Science and Engineering of Powder Metallurgy, 2021, 26(5): 428-435.
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2021, Vol. 26 
