一个强大而柔软的双相氧合金的精益设计
Wangwang Ding1,2, Qiying Tao1, Chang Liu1
1Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, P.R. China.
Nature materials
|February 17, 2025
概括
研究人员开发了一种新型的双相氧合金,提高了强度和柔性. 这种精益合金设计为高性能结构应用提供了具有成本效益的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 增材制造 增材制造 增材制造
背景情况:
- 不合金具有良好的柔性,生物相容性和耐腐蚀性,但具有中等强度,限制其在苛刻的应用中使用.
- 为了提高的强度,传统的合金方法往往会降低性,并且耗费大量能源和成本.
研究的目的:
- 提出精益合金设计策略,以创建一个强大而柔性的双相氧合金.
- 为了提高的机械性能,而不会损害像柔性这样的基本特性.
主要方法:
- 开发了一种双相氧合金,通过嵌入一个连贯的纳米级全热态面中心立方 (FCC) 相,将其嵌入到六角密封 (HCP) 矩阵中.
- 利用基于激光的粉末床融合 (LPBF) 与粉末上定制的氧化物层厚度和快速冷却来创建HCP/FCC双相结构.
- 描述了合金的微观结构和机械性能,包括抗拉强度和可塑性.
主要成果:
- 作为打印的Ti-0.67重量%O合金实现了1119.3±29.2MPa的最终抗拉强度.
- 合金表现出相当大的柔性,测量值为23.3±1.9%.
- 通过精益合金设计方法成功创建了一个强大而柔性的双相合金.
结论:
- 将一个连贯的纳米级全方位FCC相融入HCP矩阵中显著提高了强度,同时保持了柔性.
- 这种方法为开发高性能,具有成本效益和可持续的精益合金提供了一个有希望的途径.
- 基于激光的粉床融合是生产这些先进的双相合金的有效方法.
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