Tensile and Compressive Properties of Low-Cost High-Strength β-Type Ti-Mn Alloys Fabricated by Metal Injection Molding
Tensile and Compressive Properties of Low-Cost High-Strength β-Type Ti-Mn Alloys Fabricated by Metal Injection Molding
复制标题
金属注射成型低成本高强度β型钛锰合金的拉伸和压缩性能
DOI：
10.1002/9781119296126.ch79
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Masahiko Ikeda
中科院分区：
文献类型：
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作者：
Ken Cho;Mitsuo Niinomi;Masaaki Nakai;Huihong Liu;Pedro Fernandes Santos;Yoshinori Itoh;Masahiko Ikeda
比强度是结构材料最重要的性能之一。因此，β型Ti‐15V‐3Al‐3Sn‐3Cr （Ti‐15‐3）合金是一种高强度钛合金；经热处理后的极限抗拉强度为1940 MPa。然而，生产Ti - 15 - 3和其他现有的β -型钛合金所需的合金元素的有限可用性是一个重大问题。因此，应开发含有更丰富合金元素的新型高强度β型钛合金。本研究选择锰（Mn）作为合金元素开发新型钛合金。此外，为了降低生产成本，在制造过程中选择了金属注射成型（MIM），一种接近净形状的工艺。采用光学显微镜、能量色散X射线能谱、X射线衍射和透射电子显微镜对MEVI制备的β型Ti - Mn合金的显微组织进行了分析。研究了P型Ti - Mn合金的力学性能，包括维氏硬度、拉伸和压缩性能。
Specific strength is one of the most important properties of structural materials. Therefore, β‐type Ti‐15V‐3Al‐3Sn‐3Cr (Ti‐ 15‐3) alloy was developed as a high‐strength Ti alloy; it has an ultimate tensile strength of 1940 MPa after a thermomechanical treatment. However, the limited availability of the alloying elements required for the production of Ti‐15‐3 and other existing beta‐type titanium alloys is a significant concern. Therefore, new high‐strengthβ‐type titanium alloys containing more abundant alloying elements should be developed.In this study, manganese (Mn) was selected as the alloying element to develop new titanium alloys. Moreover, metal injection molding (MIM), a near‐net‐shape process, was chosen for the fabrication process to reduce the production costs. The microstructure of β‐type Ti‐Mn alloys fabricated by MEVI was analyzed by optical microscopy, energy‐dispersive X‐ray spectroscopy, X‐ray diffraction analysis, and transmission electron microscopy. The mechanical properties, including the Vickers hardness and tensile and compressive properties, of P‐ type Ti‐Mn alloys were also investigated.