2025年07月30日 星期三 首页   |   期刊介绍   |   编 委 会   |   投稿指南   |   出版法规   |   出版伦理   |   期刊订阅   |   联系我们   |   留言板   |   广告合作   |   ENGLISH
粉末冶金材料科学与工程  2023, Vol. 28 Issue (5): 481-489    DOI: 10.19976/j.cnki.43-1448/TF.2023054
  工艺技术 本期目录 | 过刊浏览 | 高级检索 |
Nb相增塑核壳结构TiAl/Nb复合材料的制备及组织性能研究
申景园, 胡连喜, 王皓洋
哈尔滨工业大学 金属精密热加工国家级重点实验室,哈尔滨 150001
Preparation, microstructure and properties of Nb phase plasticized TiAl/Nb composites with core-shell structure
SHEN Jingyuan, HU Lianxi, WANG Haoyang
National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China
全文: PDF (1016 KB)   HTML (0 KB) 
输出: BibTeX | EndNote (RIS)      
摘要 针对传统 γ-TiAl合金室温塑性低、难以满足工程化应用的难题,本文提出Nb相增塑核壳结构TiAl/Nb复合材料,系统研究了复合材料的制备工艺和力学性能。结果表明:在200 r/min转速下球磨120 h可实现细小Nb颗粒对大尺寸 γ-TiAl雾化粉的完全包裹,随后在40 MPa下,1 200 ℃真空热压1 h可获得增塑相可控的致密核壳结构组织。制备的TiAl/Nb复合材料在室温下的屈服强度为971.5 MPa,抗压强度为2 337.7 MPa,断裂应变为31.7%,表现出高强度和良好的塑性。这种强度和塑性的协同提高归因于延性β-Nb相促进了基体相之间的协调变形,提高了材料的整体持续变形能力。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
申景园
胡连喜
王皓洋
关键词 球磨热压核壳结构TiAl/Nb复合材料力学性能    
Abstract:In response to the challenges of the low plasticity at room temperature and difficulty in meeting engineering applications in traditional γ-TiAl alloys, this paper proposed Nb phase plasticized TiAl/Nb composites with core-shell structure, and systematically studied the preparation technology and mechanical properities of the composites. The results show that complete encapsulation of large-sized γ-TiAl atomized powder by fine Nb particle can be achieved after 120 h ball milling at the speed of 200 r/min. Subsequently, a densified core-shell structure with controllable plasticized phase can be obtained after vacuum hot pressing at 1 200 ℃/1 h, under 40 MPa. The prepared TiAl/Nb composites exhibit high strength and good plasticity with the yield strength of 971.5 MPa, compressive strength of 2 337.7 MPa, and fracture strain of 31.7% at room temperature. The high strength and excellent plasticity of the composites are attributed to the ductile β-Nb phase which facilitates coordinated deformation between matrix phase colonies, which thereby enhancing the continuous deformation capacity of the integral bulk materials.
Key wordsball milling    hot pressing    core-shell structure    TiAl/Nb composite    mechanical property
收稿日期: 2023-05-18      出版日期: 2023-11-22
ZTFLH:  TG146.2  
基金资助:国家自然科学基金资助项目(52175295)
通讯作者: 胡连喜,教授,博士。电话:0451-86418613;E-mail: hulx@hit.edu.cn   
引用本文:   
申景园, 胡连喜, 王皓洋. Nb相增塑核壳结构TiAl/Nb复合材料的制备及组织性能研究[J]. 粉末冶金材料科学与工程, 2023, 28(5): 481-489.
SHEN Jingyuan, HU Lianxi, WANG Haoyang. Preparation, microstructure and properties of Nb phase plasticized TiAl/Nb composites with core-shell structure. Materials Science and Engineering of Powder Metallurgy, 2023, 28(5): 481-489.
链接本文:  
http://pmbjb.csu.edu.cn/CN/10.19976/j.cnki.43-1448/TF.2023054     或     http://pmbjb.csu.edu.cn/CN/Y2023/V28/I5/481
版权所有 © 《粉末冶金材料科学与工程》编辑部
地址:长沙市麓山南路中南大学粉末冶金研究院 邮编:410083 电话:0731-88877163 邮箱:pmbjb@csu.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn