| 余欢欢,许祥杰,李强.Ti-18Nb-10Zr-(2, 4, 6)Cr合金显微组织和力学性能的研究[J].有色金属材料与工程,2021,42(4):12-18. |
| Ti-18Nb-10Zr-(2, 4, 6)Cr合金显微组织和力学性能的研究 |
| Effect of Cr on the Microstructure and Mechanical Properties of Ti-18Nb-10Zr-(2, 4, 6) Cr Alloys |
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| DOI：10.13258/j.cnki.nmme.2021.04.002 |
| 中文关键词: β钛合金 显微组织 力学性能 |
| 英文关键词:β-Ti alloy microstructure mechanical properties |
| 基金项目:上海市自然科学基金资助项目（15ZR1428400） |
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| 中文摘要: |
| 不含有毒元素的β钛合金，具有较低的弹性模量和良好的生物相容性等特点，成为近年来研究的热点。采用电弧熔炼制备Ti-18Nb-10Zr-(2, 4, 6)Cr钛合金，均匀化处理后在室温冷轧，随后在800 ℃固溶1 h后淬火。采用光学显微组织（optical microstructure, OM）和X射线衍射仪（X-ray diffractometer, XRD）分析合金显微组织与物相组成，采用维氏硬度计测试合金硬度，采用万能材料试验机进行拉伸测试。结果表明：合金固溶后均显示为单一β相。随着Cr含量的增加，合金的抗拉强度从690 MPa增加到776 MPa，维氏硬度从186增加到235。Ti-18Nb-10Zr-4Cr合金具有较高的强度（699 MPa）、较低的弹性模量（74 GPa）、良好的塑性（19%）和耐磨性，具有良好的生物应用前景。 |
| 英文摘要: |
| The β-type Ti alloys without toxic elements have become a research hotspot in recent years due to the low Young's modulus and good biocompatibility. Ti-18Nb-10Zr-(2, 4, 6) Cr alloys were prepared by arc melting, cold rolled at room temperature after homogenization, and then solution treated at 800 ℃ for 1 h followed by quenching. The microstructure and phase composition of the alloys were analyzed by optical microscope and X-ray diffractometer (XRD), the hardness of the alloys was tested by Vickers hardness tester, and the tensile test was carried out by universal material testing machine. The results show that all the alloys show a single β phase after solution treatment. With the increase of Cr, the strength of the alloy increases from 690 MPa to 776 MPa, and the microhardness increases from 186 to 235. Ti-18Nb-10Zr-4Cr alloy shows high strength (699 MPa), low Young's modulus (74 GPa), good plasticity (19%) and wear resistance, and has a good prospect for biological application. |
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