对耐火高合金的热软化测量
Ottó K Temesi1,2, Albert Karacs3, Nguyen Q Chinh2
1H-ION Kft., Konkoly-Thege Miklós út 29.-33., H-1121 Budapest, Hungary.
Materials (Basel, Switzerland)
|December 17, 2024
概括
新的自制设备测量了高达1100°C的热膨胀和缩深度. 该系统使得研究全热相转换和材料热软化成为可能,这对于金属和高合金至关重要.
科学领域:
- 材料科学与工程 材料科学与工程
- 物理金学 物理金学
- 高温材料的特性 高温材料的特性
背景情况:
- 在高温下精确测量热力学性能对于理解材料的行为至关重要.
- 现有的1000°C以上同时进行热膨胀和缩测量的方法有限.
- 描述热软化和相位转换对于设计高温应用是必不可少的.
研究的目的:
- 介绍新型自制设备,用于测量高达1100°C的热膨胀和隙深度.
- 为了研究使用度计模式的全方位相位转换.
- 开发一种方法来量化隙深度作为温度的函数 (ID,T) 并测试一种新的热软化表达式.
主要方法:
- 开发一种双模式仪器,能够进行扩度测量和洛克韦尔型硬度测试.
- 使用平坦的入器进行热膨胀和尖的入器进行入深度测量.
- 采用差分方法,从高负荷曲线中减去低负荷位移曲线,以隔离隙深度.
主要成果:
- 该设备成功地测量了高达1100°C的热膨胀和缩深度.
- 可以在度仪模式下观察到全方位相变换.
- 观察并量化了明显的热软化行为,包括由于缩主导的明显收缩.
结论:
- 开发的自制设备为高温热力学表征提供了一个多功能平台.
- 作为温度的函数来确定内深度的新方法对于研究热软化是有效的.
- 这些发现为在高温下改进纯金属和耐火高合金 (HEAs) 的建模铺平了道路.
更多相关视频
12:02Determination of Thermodynamic Properties of Alkaline Earth-liquid Metal Alloys Using the Electromotive Force Technique
Published on: November 3, 2017
13.1K
08:55Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
8.5K
相关概念视频
01:27Thermal expansion and Thermal stress: Problem Solving
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
01:23Measurement of Air Content in Concrete
Air content measurement in concrete is critical for ensuring structural integrity and durability of concrete structures, especially in environments prone to severe weather conditions. Accurate air content analysis optimizes concrete's resistance to freeze-thaw cycles and enhances its workability and strength. Several methods are standardized under ASTM guidelines to measure the air content in fresh concrete, each suitable for different concrete types and conditions.
The pressure method,...
The pressure method,...
01:18Mechanical Characteristics of Steel
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 to...
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 to...