martensite

简明释义

英[ˈmɑːtənˌzaɪt]美[ˈmɑrtənˌzaɪt]

n. [材] 马氏体；马登斯体；马丁散铁

英英释义

单词用法

同义词

反义词

例句

1.It is shown that the transformation hysteresis increases and the reversible martensite amount decreases as the increasing of the strain.

结果表明，随着应变的增大，该合金相变滞后增宽，马氏体可逆转变量减少。

2.It is shown that the transformation hysteresis increases and the reversible martensite amount decreases as the increasing of the strain.

结果表明，随着应变的增大，该合金相变滞后增宽，马氏体可逆转变量减少。

3.The final structure obtained from tempering a fully hardened steel is called tempered martensite.

回火完全淬硬钢得到的最终组织结构被称为回火马氏体。

4.No deformation martensite phase was discovered.

没有发现形变诱发马氏体相。

5.The deformation dislocation density and martensite microstructure were also analysed by TEM.

采用TEM对形变位错密度以及马氏体组织进行了分析。

6.These lath martensite first nucleates in parent austenite intergranular and twin boundary.

应变诱发马氏体首先在原奥氏体晶界和孪晶界形核。

7.Rapid cooling after nitrocarburizing, martensite structure is obtained at the diffusion layer.

氮碳共渗后快冷，在渗层获得含氮碳的马氏体组织。

8.Tempering is possible because of the instability of the martensite, the principal constituent of hardened steel.

由于马氏体这一淬硬钢主要成分的不稳定性，使得回火成为可能。

9.In the heat treatment process, the transformation to martensite (马氏体) occurs rapidly.

在热处理过程中，转变为马氏体的过程发生得很快。

10.To achieve optimal toughness, it is essential to control the formation of martensite (马氏体) during cooling.

为了达到最佳的韧性，控制冷却过程中马氏体的形成是至关重要的。

11.The quenching process transforms austenite into martensite (马氏体), which is crucial for tool steels.

淬火过程将奥氏体转变为马氏体，这对工具钢至关重要。

12.The presence of martensite (马氏体) in the microstructure can significantly affect the mechanical properties of the alloy.

微观结构中存在的马氏体可以显著影响合金的机械性能。

13.The steel was treated to form a high percentage of martensite (马氏体), enhancing its hardness.

该钢材经过处理，形成了高比例的马氏体，提高了其硬度。

作文

Martensite is a fascinating phase of steel that has significant implications for its mechanical properties. This microstructure is formed when steel is rapidly cooled, or quenched, from a high temperature. The rapid cooling prevents the carbon atoms from diffusing out of the iron lattice, resulting in a distorted structure that is harder and more brittle than other forms of steel. Understanding 马氏体 is crucial for engineers and metallurgists because it directly affects the performance and durability of steel in various applications.In essence, 马氏体 is a product of the transformation process of austenite, which is the face-centered cubic (FCC) form of iron. When steel is heated to high temperatures, it transforms into austenite, which can dissolve a significant amount of carbon. However, upon rapid cooling, the austenite does not have time to revert to its original body-centered cubic (BCC) structure, leading to the formation of 马氏体. This transformation is not only important in terms of hardness but also influences the toughness and ductility of the material.The mechanical properties of 马氏体 are often characterized by its high strength and hardness, which make it suitable for applications requiring wear resistance. For instance, tools and dies are frequently made from steel that has been treated to enhance the 马氏体 content, ensuring they can withstand significant wear and tear. However, the increased hardness comes at the cost of decreased toughness, which can lead to brittleness in certain conditions. Thus, understanding the balance between these properties is essential for designing materials that meet specific performance criteria.One critical aspect of 马氏体 is its ability to be tempered. Tempering is a heat treatment process that involves reheating the hardened steel to a lower temperature. This process allows some of the internal stresses to relieve and can improve the toughness of the material while still retaining a significant portion of its hardness. The tempering process is vital for applications where both hardness and toughness are required, such as in automotive components and structural applications.In addition to its mechanical properties, 马氏体 also plays a role in the overall performance of steel under various environmental conditions. For example, the presence of 马氏体 can influence the corrosion resistance of steel, as the microstructure can affect how the material interacts with moisture and other corrosive agents. Therefore, understanding the formation and properties of 马氏体 is essential for predicting the longevity and reliability of steel products in real-world applications.In conclusion, 马氏体 is a critical microstructure in steel that significantly influences its mechanical properties and performance. Its formation through rapid cooling from austenite leads to enhanced hardness and strength, making it suitable for various industrial applications. However, the brittleness associated with 马氏体 necessitates careful consideration during the design and treatment processes. By mastering the concepts surrounding 马氏体, engineers and metallurgists can develop advanced materials that meet the demands of modern engineering challenges.

马氏体是钢的一种迷人相，其在机械性能方面具有重要意义。这种微观结构是在钢从高温迅速冷却或淬火时形成的。快速冷却阻止了碳原子从铁晶格中扩散，导致形成一种扭曲的结构，这种结构比其他形式的钢更硬且更脆。理解马氏体对工程师和冶金学家至关重要，因为它直接影响钢在各种应用中的性能和耐用性。本质上，马氏体是奥氏体转变过程的产物，奥氏体是铁的面心立方（FCC）形式。当钢被加热到高温时，它转变为奥氏体，能够溶解大量碳。然而，在快速冷却时，奥氏体没有时间恢复到其原始的体心立方（BCC）结构，导致形成马氏体。这种转变不仅在硬度上重要，还影响材料的韧性和延展性。马氏体的机械性能通常以其高强度和硬度为特征，使其适合于需要耐磨性的应用。例如，工具和模具通常由经过处理以增强马氏体含量的钢制成，以确保它们能够承受显著的磨损。然而，硬度的增加伴随着韧性的降低，这可能导致在某些条件下的脆性。因此，理解这些属性之间的平衡对于设计满足特定性能标准的材料至关重要。马氏体的一个关键方面是它的回火能力。回火是一种热处理过程，包括将硬化钢加热到较低的温度。这个过程允许一些内部应力释放，并可以改善材料的韧性，同时仍然保留其硬度的显著部分。回火过程对于需要同时具备硬度和韧性的应用至关重要，例如汽车组件和结构应用。除了机械性能外，马氏体在各种环境条件下也会影响钢的整体性能。例如，马氏体的存在可以影响钢的耐腐蚀性，因为微观结构可以影响材料如何与水分和其他腐蚀性物质相互作用。因此，理解马氏体的形成和性质对于预测钢产品在实际应用中的耐久性和可靠性至关重要。总之，马氏体是钢中一种关键的微观结构，显著影响其机械性能和性能。通过从奥氏体快速冷却形成的马氏体，使其硬度和强度增强，适合各种工业应用。然而，与马氏体相关的脆性在设计和处理过程中需要谨慎考虑。通过掌握围绕马氏体的概念，工程师和冶金学家可以开发出满足现代工程挑战需求的先进材料。