austenite

简明释义

英[ˈɒstɪnaɪt;ˈɔː-]美[ˈɔstəˌnaɪt]

n. [材] 奥氏体

英英释义

单词用法

同义词

反义词

例句

1.Tie-line and level-law calculations show that low-carbon ferrite nucleates and grows, leaving the remaining austenite richer in carbon.

由截线及杠杆定律分析可知，低碳铁素体成核并长大，剩下含碳量高的奥氏体。

2.Influences of carbon, silicon and aluminium on the surface reaction of austenite stainless steel powder during sintering have been studied.

研究了碳、硅和铝合金元素对水雾化奥氏体不锈钢粉末烧结时的表面反应的影响。

3.A new method for showing the prior austenite crystal boundary corrosion, of pipeline steel has been also supposed.

同时探索出一种新的管线钢原奥氏体晶界腐蚀方法。

4.Only strip austenite substructure and stacking fault were observed around the carbides.

在碳化物颗粒附近只观察到奥氏体变体和层错。

5.The effect of austenite deformation on nucleation rate of ferrite is discussed with classical nucleation theory as well.

最后在经典形核理论的前提下讨论了奥氏体形变对铁素体形核率的影响。

6.This paper analyzes the influences of carbon, silicon and aluminium on the surface reaction when sintering austenite stainless steel powder.

研究了碳、硅和铝合金元素对水雾化奥氏体不锈钢粉末烧结时的表面反应的影响。

7.Carbon-poor area forms by way of random fluctuation and carbon atom diffusion. Bainitic ferrites nucleate in carbon-poor austenite.

依靠随机涨落，形成贫碳区，贝氏体铁素体在贫碳的奥氏体中形核。

8.When steel is heated above its critical temperature, it transforms into austenite.

当钢加热到其临界温度以上时，它会转变为austenite（奥氏体）。

9.The formation of austenite is crucial in determining the mechanical properties of steel.

形成austenite（奥氏体）对钢的机械性能至关重要。

10.In high-carbon steels, austenite can be retained at room temperature.

在高碳钢中，austenite（奥氏体）可以在室温下保留。

11.The presence of austenite in the microstructure of steel affects its hardness.

钢的显微结构中存在的austenite（奥氏体）影响其硬度。

12.Heat treatment processes often aim to stabilize austenite for improved performance.

热处理过程通常旨在稳定austenite（奥氏体）以提高性能。

作文

Understanding the properties and applications of different phases of steel is crucial in metallurgy. One of the most important phases is austenite, which is a face-centered cubic (FCC) form of iron that can dissolve significant amounts of carbon. This phase is stable at high temperatures and plays a vital role in determining the mechanical properties of steel. Austenite is typically found in stainless steels and high-alloy steels, where its presence contributes to improved toughness and ductility. The transformation of iron into austenite occurs when the temperature rises above a certain critical point, known as the A3 line in the iron-carbon phase diagram. At this temperature, the body-centered cubic (BCC) structure of ferrite transforms into the FCC structure of austenite. This transformation is not only essential for the heat treatment process but also for understanding how to manipulate the properties of steel for various applications. When steel is heated to form austenite, it can absorb more carbon than in its ferritic state. This characteristic allows for the creation of high-carbon steels, which are used in applications requiring superior hardness and strength. After the steel has been heated and transformed into austenite, it can be rapidly cooled or quenched to lock in the carbon content, resulting in a hard microstructure known as martensite. This process is fundamental in producing tools and components that require high wear resistance. Moreover, the stability of austenite is influenced by alloying elements such as nickel and manganese. These elements can lower the transformation temperature, allowing austenite to remain stable at room temperature in certain stainless steels. This stability is what gives stainless steel its corrosion-resistant properties, making it ideal for kitchen utensils, medical instruments, and construction materials. In addition to its mechanical properties, austenite also exhibits excellent formability. This means that it can be easily shaped and molded into complex geometries without cracking. This property is particularly beneficial in industries that require intricate designs, such as automotive and aerospace manufacturing. The ability to form austenite into various shapes while maintaining its structural integrity is a significant advantage. In conclusion, austenite is a critical phase in the metallurgy of steel, influencing its mechanical properties, formability, and overall performance. Understanding austenite and its behavior under different conditions allows engineers and metallurgists to design materials that meet specific requirements for a wide range of applications. The versatility of austenite makes it an indispensable component in modern materials science, paving the way for innovations in technology and engineering. As we continue to explore and develop new alloys and treatments, the significance of austenite in the field of metallurgy will undoubtedly remain paramount.

理解和掌握不同钢铁相的特性和应用对于冶金学至关重要。其中最重要的相之一是austenite，它是一种面心立方（FCC）形式的铁，可以溶解大量的碳。该相在高温下稳定，并在决定钢铁的机械性能方面发挥着重要作用。Austenite通常存在于不锈钢和高合金钢中，其存在有助于提高韧性和延展性。 铁转变为austenite发生在温度升高超过某个临界点时，这个点称为铁碳相图中的A3线。在这个温度下，铁素体的体心立方（BCC）结构转变为austenite的面心立方结构。此转变不仅对热处理过程至关重要，而且对理解如何操控钢铁的性能以适应各种应用也是如此。 当钢铁被加热形成austenite时，它可以吸收比铁素体状态更多的碳。这一特性使得可以制造出高碳钢，这些钢在需要优越硬度和强度的应用中使用。在钢铁被加热并转变为austenite后，可以迅速冷却或淬火，以锁定碳含量，从而得到一种称为马氏体的硬微观结构。这个过程在生产需要高耐磨性的工具和组件中是基础。 此外，合金元素如镍和锰会影响austenite的稳定性。这些元素可以降低转变温度，使得在某些不锈钢中austenite在室温下保持稳定。这种稳定性赋予了不锈钢其抗腐蚀特性，使其成为厨房用具、医疗仪器和建筑材料的理想选择。 除了机械性能外，austenite还表现出优良的可成形性。这意味着它可以在不破裂的情况下轻松地被塑造成复杂的几何形状。这一特性在需要复杂设计的行业中尤其有益，例如汽车和航空航天制造。能够将austenite成型为各种形状，同时保持其结构完整性，是一个显著的优势。 总之，austenite是钢铁冶金中的关键相，影响其机械性能、可成形性和整体性能。理解austenite及其在不同条件下的行为使工程师和冶金学家能够设计满足特定要求的材料，适用于广泛的应用。austenite的多功能性使其成为现代材料科学中不可或缺的组成部分，为技术和工程领域的创新铺平了道路。随着我们不断探索和开发新的合金和处理方法，austenite在冶金学领域的重要性无疑将持续存在。