高熵合金颗粒增强钛合金复合材料摩擦磨损行为研究
The Wear Behavior of High-Entropy Alloy Particles Reinforced Titanium Alloy Composite
DOI: 10.12677/MS.2018.810120, PDF,  被引量    国家自然科学基金支持
作者: 邱敬文, 颜建辉：湖南科技大学，新能源储存与转换先进材料湖南省重点实验室，湖南 湘潭；付正帆, 段中元, 李伟华：湖南科技大学，湖南省国防科技高温耐磨材料及制备技术重点实验室，湖南 湘潭；潘 迪：中南大学粉末冶金国家重点实验室，湖南 长沙；舒 逸：湖南玉丰真空科学技术有限公司，湖南 湘潭
关键词: 钛合金；高熵合金；颗粒增强复合材料；显微组织；摩擦性能；Titanium Alloys； High-Entropy Alloys； Particle Reinforced Composite； Microstructure； Tribological Properties
摘要: 本文首先利用金属元素粉末球磨后通过放电等离子烧结制备了Ti-11Fe-3Nb-3Mn-3Sn (at.%)钛合金。同时在球磨后的元素粉末中加入10 wt.%的FeCoCrNiMo0.15 (at.%)高熵合金颗粒通过放电等离子烧结制备了高熵合金颗粒增强的钛基复合材料。本文对两种材料在室温条件下进行了往复式滑动摩擦磨损试验，利用场发射扫描电子显微镜、显微硬度测试仪和超景深三维轮廓仪等设备对加入高熵合金颗粒前后的钛合金样品及其摩擦磨损行为进行了研究和对比。结果表明：在钛合金中加入高熵合金颗粒增强后，高熵合金颗粒增强钛合金硬度得到提高。高熵合金颗粒外层与钛合金形成一定厚度的扩散层，加入高熵合金颗粒后的钛合金耐磨性能提高明显。Ti-11Fe-3Nb-3Mn-3Sn合金与高熵颗粒增强后的Ti-11Fe-3Nb-3Mn-3Sn合金的磨损机制主要为粘着磨损，磨粒磨损和少量的塑性变形。
Abstract: In this paper, Ti-11Fe-3Nb-3Mn-3Sn (at.%) alloys was prepared by the spark plasma sintering (SPS) method using elemental powders after ball-milling. And then the 10 wt.% FeCoCrNiMo alloy particles was mixed with the elemental powders after ball-milling to obtain high-entropy alloy particles reinforced Ti-11Fe-3Nb-3Mn-3Sn (at.%) alloy composite by the same SPS method. The wear behaviors of Ti-11Fe-3Nb-3Mn-3Sn (at.%) alloy and its composite were investigated by re-ciprocating sliding wear tests at the room temperature. Field emission scanning electron micro-scope, microhardness tester and 3D optical surface profiler were employed to study the micro-structures and wear behaviors. The results showed that: the hardness and wear resistance of the high-entropy alloy reinforced titanium alloy was improved significantly after the addition of high-entropy alloy particles. A diffusion layer with a certain thickness was formed between the particles and titanium alloy matrix. The wear mechanism of Ti-11Fe-3Nb-3Mn-3Sn and its compo-site is mainly adhesive wear, abrasive wear and some plastic deformation.
文章引用：邱敬文, 付正帆, 潘迪, 舒逸, 颜建辉, 段中元, 李伟华. 高熵合金颗粒增强钛合金复合材料摩擦磨损行为研究[J]. 材料科学, 2018, 8(10): 1007-1015. https://doi.org/10.12677/MS.2018.810120

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