WC粉体对ZL102合金组织和性能影响的研究
Study on the effect of WC powder on the microstructure and properties of ZL102 alloy
贾熙 1杨慕尧 2杨继伟 3王泽 1杨军 1艾秀兰1
作者信息
- 1. 大连交通大学材料科学与工程学院,辽宁大连 116028
- 2. 东北大学材料科学与工程学院,辽宁沈阳 110000
- 3. 大连华锐重工铸业有限公司,辽宁大连 116028
- 折叠
摘要
将不同量的WC粉体加入到ZL102合金试样,利用SEM、三维视频显微镜以及拉伸试验机等表征手段,研究WC粉体对ZL102合金性能的影响.试验结果表明:随着WC粉体加入量的增加,ZL102合金的微观组织明显细化,同时合金的力学性能得到明显的改善.当WC粉体加入量为0.20％时,ZL102合金获得了相对最好的显微组织和拉伸性能.共晶硅由不均匀分布的长针状逐渐转变为短棒状或点状在晶间均匀分布,晶粒组织从大量的柱状晶向等轴晶转化;抗拉强度及拉伸断口最大凸起高度先上升后下降,延伸率变化趋势不明显,抗拉强度237 MPa,提高了 10.50％;拉伸断口最大凸起高度是1558.30 μm,提高了 72.21％.
Abstract
Different amounts of WC powder were added to ZL102 alloy specimens.Characterization means such as SEM,3D video microscope and tensile testing machine were used to study the effect of WC powder on the properties of ZL102 alloy.The test results show that with the increase of WC powder addition,the microstructure of ZL102 alloy is obviously refined,while the mechanical properties of the alloy are obviously improved.When the amount of WC powder added is 0.20％,ZL102 alloy obtains the relatively best microstructure and tensile properties.Eutectic silicon from the uneven distribution of long needles gradually transformed into short rods or dots in the intergranular uniform distribution,grain or-ganization from a large number of columnar crystals to the equiaxial crystal transformation;tensile strength and tensile fracture maximum height of the bulge first rise and then decline,the elongation change trend is not obvious,the tensile strength of 237 MPa,an increase of 10.50％;tensile fracture maximum height of the bulge is 1558.30 μm,an increase of 72.21％.
关键词
WC粉体/ZL102合金/显微组织/力学性能Key words
WC powder/ZL102 alloy/Microstructure/Mechanical properties引用本文复制引用
基金项目
辽宁省科技厅联合开放基金(2021-KF-15-02)
出版年
2024
NETL
NSTL
万方数据