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相关概念视频

Mechanical Characteristics of Steel01:18

Mechanical Characteristics of Steel

614
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...
614
Steel Manufacturing01:26

Steel Manufacturing

636
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...
636
Design of Transmission Shafts01:16

Design of Transmission Shafts

380
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by...
380
Accelerated Curing of Concrete01:25

Accelerated Curing of Concrete

192
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
192
Design of Transmission Shafts - Stress Analysis01:15

Design of Transmission Shafts - Stress Analysis

408
Designing a transmission shaft requires a thorough understanding of the stresses induced by bending moments and torques, especially in systems where power is transferred through gears. These forces create force-couple systems at the centers of the shaft's cross-sections, leading to both transverse and torsional loading. Although shearing stresses from transverse loads are typically smaller than those from torques and are often overlooked, the significant normal stresses from these loads...
408
Structural Steel Products01:24

Structural Steel Products

253
Structural steel products are created within a structural mill. The process begins with a beam blank that is reheated and then fed through a series of rollers. These rollers progressively shape the metal into its final form. Adjusting the spacings between the rollers allows for the production of different sections with the same nominal dimensions.
Once shaped, the steel's final form emerges as a continuous length, which is then segmented by a hot saw into manageable pieces. These segments...
253

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Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes
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集成计算加速了新型标记钢的设计和性能控制.

Shixing Chen1,2, Jingchuan Zhu1, Tingyao Liu2

  • 1School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.

Materials (Basel, Switzerland)
|June 28, 2023
PubMed
概括

机器学习加速了新型马氏体老化钢的设计. 这种方法实现了高预测准确度,并确定了超高抗拉强度和优良可塑性的最佳组合.

关键词:
机器学习是机器学习.马氏体老化钢的使用机械性能 机械性能 机械性能用热力学计算进行热力学计算.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 计算材料工程 计算材料工程
  • 金工业是金工业的一个方面.

背景情况:

  • 马氏体老化钢对于高性能应用至关重要.
  • 了解合金元素相互作用和沉强化是优化钢材性能的关键.
  • 综合计算材料工程 (ICME) 为材料设计提供了强大的工具.

研究的目的:

  • 用先进的计算和实验方法加速新型马氏体老化钢的设计和开发.
  • 研究合金元素和沉阶段对钢材性能的影响.
  • 为了优化构成和加工参数,以获得卓越的机械性能.

主要方法:

  • 利用数据库技术,机器学习 (ML),热力学计算和实验验证.
  • 采用ML进行建模和参数优化,达到高达98.58%的预测准确度.
  • 进行了相关性测试,以分析多视角元素影响和用于相位分析的热力学计算.

主要成果:

  • 通过真空弧炼开发并验证了一种新的马氏体老化钢材等级.
  • 实现了卓越的机械性能,包括1887 MPa的屈服强度,1907 MPa的抗拉强度,58 HRC的硬度和7.8%的延长.
  • 确定了最佳的三元组合过程参数,在组合和性能方面具有很高的对比度.

结论:

  • 用ML驱动的方法加速设计超高拉伸力钢的方法是可以通用和可靠的.
  • 基于相位图的热力学计算提供了基于相位图的热处理信息,从而成功开发了钢材等级.
  • 这项研究表明了设计先进的高强度钢的强大方法.