高强度大马士革钢通过增材制造
在PubMed上查看摘要
概括
此摘要是机器生成的。用于激光添加剂制造的新型Fe19Ni5Ti钢通过纳米沉和马氏体形成进行现场硬化. 这一过程创造了复杂的微观结构, 具有交替的软硬层,
科学领域
- 材料科学
- 金属工程
- 添加剂制造
背景情况
- 激光增材制造 (LAM) 允许从金属粉末中生产复杂的3D部件.
- 它可以对处理参数进行数字控制,从而影响合金的微观结构.
- 在LAM中进行内在热处理可能会触发合金中的现场沉.
研究的目的
- 为LAM开发一种新的Fe19Ni5Ti钢.
- 通过纳米沉和马氏体转化实现现场硬化.
- 创建复杂的,多尺度的微观结构,
主要方法
- 一个Fe19Ni5Ti钢合金的设计.
- 激光增材制造的应用
- 在现场控制的-纳米沉和马氏体转化.
- 在多个长度尺度上进行微结构性表征.
主要成果
- 在现场通过纳米沉和在200°C形成马石硬化钢.
- 从微到纳米的复杂微结构层次的创建.
- 采用以大马士革钢为灵感的交替软硬的材料制造.
- 实现了1300MPa的拉伸强度和10%的延伸.
结论
- 与古代大马士革钢相比,开发的Fe19Ni5Ti钢具有更高的机械性能.
- 在现场降水强化和局部微观结构控制是实现先进材料性能的关键.
- 这些原则适用于其他沉硬化合金和添加剂制造工艺.
相关概念视频
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
Steel manufacturing is a multi-stage process that begins by smelting iron ore into cast iron in a blast furnace. This initial stage involves layering iron ore with coke, a type of fuel, and crushed limestone within the furnace. The coke is ignited with a high volume of air, leading to the creation of carbon monoxide, which acts to reduce the iron ore to pure iron.
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...
Steel sections can be joined together through various fastening techniques including riveting, bolting, and welding, each suitable for different structural requirements and conditions.
Rivets are cylindrical steel fasteners with a specially designed head. During application, rivets are heated until white-hot and then inserted through pre-drilled holes in the steel sections. A pneumatic hammer is used to shape the exposed end into a second head, securing the sections together.
Bolting is another...

