选区激光熔化及热等静压制备Ti-25Ta合金微观组织和力学性能

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中文摘要：采用选区激光熔化技术制备了 Ti-25Ta合金样品,并对打印件和热等静压样品的相对密度、显微组织、显微硬度和拉伸性能进行了表征.结果表明,随着激光功率的增加,扫描轨迹宽度和深度增加,表面形貌得到改善.经热等静压处理后,样品最大致密度由95.31％提高到98.01％.同时,随着输入功率的增加,晶粒细化为板条马氏体和胞状晶粒.致密化处理后,亚晶粒合并,并形成大角度晶界.热等静压稳定了合金的显微硬度,提高了合金的抗拉伸强度和伸长率.

外文标题：Microstructure Evolution and Mechanical Properties of Ti-25Ta Alloy Fabricated by Selective Laser Melting and Hot Isostatic Pressing

外文摘要：Ti-25Ta alloy samples were fabricated by selective laser melting,and the relative density,microstructure,microhardness and tensile properties of the as-built and hot isostatic pressing(HIP)-prepared samples were characterized.Results show that the track width and penetration depth are increased with the increase in laser power,and the surface morphology is improved.The maximum relative density improves from 95.31％to 98.01％after HIP process.Moreover,the microstructure is refined into the lath martensite and cellular grains with the increase in input power.After densification treatment,the subgrain coalescence occurs and high angle grain boundaries are formed.In addition,HIP process stabilizes the microhardness and enhances the tensile strength and elongation.

外文关键词：

Ti-25Ta alloyselective laser meltinghot isostatic pressing

作者：

蒲芸娜、赵德伟、刘斌斌、施麒、李军雷、谭冲、申正焱、谢焕文、刘辛

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作者单位：

广东省科学院新材料研究所国家钛及稀有金属粉末冶金工程技术研究中心广东省金属强韧化技术与应用重点实验室,广东广州 510650

大连大学附属中山医院,辽宁大连 116001

北京科技大学新金属材料国家重点实验室,北京 100083

关键词：

Ti-25合金选区激光熔化热等静压

基金：

Key Realm R&D Program of Guangdong ProvinceState Key Laboratory of Advanced Metals and MaterialsKey Research Program of GuangzhouInternational Science and Technology Cooperation Program of Guangdong ProvinceGuangdong Academy of Science Project of Science and Technology DevelopmentGuangdong Academy of Science Project of Science and Technology DevelopmentGuangdong Academy of Science Project of Science and Technology DevelopmentNational Key Research and Development Project

项目编号：

2018B0909040042022-Z162022060400012022A05050500252020GDASYL-202005040012022GDASZH-20220101072022GDASZH-20220101092022YFC2406000

出版年：

2024

DOI：

10.12442/j.issn.1002-185X.20230703

稀有金属材料与工程

中国有色金属学会,中国材料研究学会,西北有色金属研究院

稀有金属材料与工程

CSTPCD北大核心

影响因子：0.634

ISSN：1002-185X

年,卷(期)：2024.53(8)