effective grain size

简明释义

有效粒径

英英释义

例句

1.A smaller effective grain size generally leads to higher hardness in metals.

较小的有效晶粒尺寸通常会导致金属硬度更高。

2.In metallurgy, the effective grain size can influence the ductility of the alloy.

在冶金学中，有效晶粒尺寸会影响合金的延展性。

3.The researchers measured the effective grain size to determine the material's strength.

研究人员测量了有效晶粒尺寸以确定材料的强度。

4.By adjusting the processing conditions, we can control the effective grain size of the final product.

通过调整加工条件，我们可以控制最终产品的有效晶粒尺寸。

5.The effective grain size of the powder affects the sintering process in ceramics.

粉末的有效晶粒尺寸会影响陶瓷的烧结过程。

作文

Understanding the concept of effective grain size is crucial in various fields such as materials science, geology, and engineering. The term refers to the average size of grains in a material that significantly influences its properties and behavior. In metallurgy, for instance, the effective grain size can affect the strength, ductility, and toughness of metals. Smaller grain sizes generally lead to stronger and more ductile materials due to the increased number of grain boundaries, which impede dislocation motion. This phenomenon is known as the Hall-Petch relationship, where the yield strength of a material increases with decreasing grain size. Therefore, controlling the effective grain size during processing is essential for optimizing material performance.In geology, the effective grain size plays a vital role in sedimentology and soil mechanics. It helps in classifying sediments and understanding their transport and deposition mechanisms. For example, finer grains tend to be transported over longer distances by water or wind, while coarser grains settle quickly. The effective grain size can also influence the porosity and permeability of soils, which are critical factors in groundwater flow and contaminant transport. Engineers often consider the effective grain size when designing foundations and assessing soil stability, as it can impact the bearing capacity of the ground.Furthermore, in the context of nanotechnology, the effective grain size has implications for the development of advanced materials. As researchers create materials at the nanoscale, the effective grain size becomes increasingly important. Nanocrystalline materials, which have grain sizes on the order of nanometers, exhibit unique mechanical, electrical, and thermal properties compared to their larger-grained counterparts. Understanding how to manipulate the effective grain size at this scale allows scientists to engineer materials with tailored properties for specific applications, such as high-strength alloys or efficient catalysts.In conclusion, the effective grain size is a fundamental concept that impacts various scientific and engineering disciplines. Its influence on material properties, sediment behavior, and nanotechnology highlights the importance of understanding and controlling grain size in practical applications. Whether in the development of new materials, the analysis of geological formations, or the design of civil engineering projects, the effective grain size remains a key factor that shapes our understanding of the physical world. By grasping the significance of this term, we can better appreciate its role in advancing technology and improving our environment.

理解有效晶粒尺寸的概念在材料科学、地质学和工程等多个领域至关重要。该术语指的是材料中颗粒的平均大小，这对其特性和行为有显著影响。例如，在冶金学中，有效晶粒尺寸可以影响金属的强度、延展性和韧性。较小的晶粒尺寸通常会导致材料更强且更具延展性，因为晶界数量增加，阻碍了位错运动。这种现象被称为霍尔-佩奇关系，即材料的屈服强度随着晶粒尺寸的减小而增加。因此，在加工过程中控制有效晶粒尺寸对于优化材料性能至关重要。在地质学中，有效晶粒尺寸在沉积学和土壤力学中发挥着重要作用。它有助于对沉积物进行分类，并理解其运输和沉积机制。例如，较细的颗粒往往会被水或风运输更长的距离，而较粗的颗粒则迅速沉降。有效晶粒尺寸还可以影响土壤的孔隙率和渗透性，这些都是地下水流动和污染物运输的关键因素。工程师在设计基础设施和评估土壤稳定性时，常常考虑有效晶粒尺寸，因为它会影响地面的承载能力。此外，在纳米技术的背景下，有效晶粒尺寸对先进材料的发展也有影响。当研究人员在纳米尺度上创造材料时，有效晶粒尺寸变得愈发重要。纳米晶材料的晶粒尺寸在纳米级别上，表现出与其较大晶粒对应物不同的独特机械、电气和热特性。理解如何在这一尺度上操控有效晶粒尺寸使科学家能够设计出具有特定应用的材料，例如高强度合金或高效催化剂。总之，有效晶粒尺寸是一个基本概念，影响着多个科学和工程学科。它对材料特性、沉积物行为和纳米技术的影响突显了在实际应用中理解和控制晶粒尺寸的重要性。无论是在新材料的开发、地质构造的分析，还是在土木工程项目的设计中，有效晶粒尺寸始终是塑造我们对物理世界理解的关键因素。通过掌握这一术语的重要性，我们可以更好地欣赏其在推动技术进步和改善环境中的作用。