首页|3D打印钛合金的制备与组织性能研究

3D打印钛合金的制备与组织性能研究

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采用 3D打印的方法制备了不同 C 含量(质量分数)的 Ti-4Al-3V-xC 钛合金(x=0,0.12,0.23,0.39 和 0.62),对比分析了不同 C含量钛合金的显微组织、硬度、蠕变性能和拉伸性能.结果表明,添加 C的钛合金的硬度和弹性模量都高于未添加 C 的钛合金,且随着 C 含量从 0.12%增加至 0.62%,含 C钛合金的硬度和弹性模量逐渐增加;随着保压时间的延长,不同 C 含量的钛合金的蠕变深度都呈现逐渐增加的趋势,但是在相同保压时间下,含 C钛合金的蠕变深度都小于不含C钛合金,且 C含量越高则钛合金的蠕变深度越小.含 C 钛合金的抗拉强度和屈服强度都高于不含 C钛合金,而断后伸长率都低于不含 C钛合金,尤其是当 C含量增加至 0.39%及以上时,含 C钛合金的断后伸长率下降较为明显.当 C含量为 0.23%时,3D打印钛合金的抗拉强度、屈服强度和断后伸长率高于铸造 TC4 钛合金和锻态 TC4 钛合金,具有相对较好的综合性能.
Preparation and Microstructure Properties of 3D Printed Titanium Alloy
Ti-4Al-3V-xC titanium alloys with different C(weight percent)contents(x=0,0.12,0.23,0.39 and 0.62)were prepared using 3D printing method.The microstructure,hard-ness,creep properties,and tensile properties of titanium alloys with different C contents were compared and analyzed.The results show that the hardness and elastic modulus of titanium alloys with added C are higher than those without added C.As the C content increases from 0.12%to 0.62%the hardness and elastic modulus of titanium alloys containing C gradually increase;as the holding time prolongs,the creep depth of titanium alloys with different C contents gradually in-creases.However,under the same holding time,the creep depth of titanium alloys containing C is smaller than that of titanium alloys without C,and the higher the C content,the smaller the creep depth of titanium alloys.The tensile strength and yield strength of titanium alloys contai-ning C are higher than those without C,and the elongation after fracture is lower than that of ti-tanium alloys without C.Especially when the C content increases to 0.39%or above,the elonga-tion after fracture of titanium alloys containing C decreases more significantly.When the C con-tent is 0.23%,the tensile strength,yield strength,and elongation after fracture of 3D printed ti-tanium alloy are higher than those of cast TC4 titanium alloy and forged TC4 titanium alloy,indi-cating relatively good comprehensive properties.

3D printingtitanium alloyC contentmicrostructuremechanical property

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芜湖职业技术学院 智能制造学院,安徽 芜湖 241000

3D打印 钛合金 C含量 显微组织 力学性能

校级"人才工程"项目(2021)校级科学研究项目(2022)芜湖市科技计划(2022)安徽省高等学校科研项目(2023)安徽省职业与成人教育学会教育教学研究规划课题(2023)芜湖市重点研发与成果转化项目(2023)

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2024

10.14152/j.cnki.2096-191X.2024.02.012

太原学院学报(自然科学版)
太原大学教育学院

太原学院学报(自然科学版)

CHSSCD
影响因子：0.315
ISSN：1673-7016
年,卷(期)：2024.42(2)
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