ductile brittle transition temperature

简明释义

延性 脆性转变温度

英英释义

例句

1.The ductile brittle transition temperature can vary significantly between different alloys, impacting their applications.

不同合金之间的延展性脆性转变温度可能会有显著差异，这会影响它们的应用。

2.Engineers must consider the ductile brittle transition temperature when selecting materials for structures exposed to extreme cold.

工程师在选择暴露于极端寒冷环境的结构材料时，必须考虑延展性脆性转变温度。

3.The steel's performance is significantly affected by its ductile brittle transition temperature, which determines how it behaves under low temperatures.

钢材的性能受到其延展性脆性转变温度的显著影响，这决定了它在低温下的表现。

4.A lower ductile brittle transition temperature indicates that a material is more likely to fracture in cold conditions.

较低的延展性脆性转变温度表明材料在寒冷条件下更容易发生断裂。

5.Testing for the ductile brittle transition temperature is essential for ensuring the safety of pipelines in Arctic regions.

测试延展性脆性转变温度对于确保北极地区管道的安全至关重要。

作文

The concept of ductile brittle transition temperature is crucial in the field of materials science and engineering. It refers to the temperature at which a material transitions from a ductile state, where it can deform plastically under stress, to a brittle state, where it fractures without significant deformation. Understanding this transition is essential for engineers and designers who work with metals and polymers, as it directly impacts the performance and safety of structures and components. When a material is above its ductile brittle transition temperature (DBTT), it exhibits ductility, allowing it to absorb energy and undergo significant deformation before breaking. This property is particularly important in applications where materials are subjected to dynamic loads or impacts, such as in construction and automotive industries. Ductile materials can bend and stretch, providing warning signs before failure, which is a desirable trait in many engineering applications.Conversely, below the ductile brittle transition temperature, materials become brittle. In this state, they are more likely to fracture suddenly when subjected to stress, often without any prior indication of failure. This behavior can lead to catastrophic failures in structures, machinery, and other critical components. For instance, if a bridge is constructed using steel that has a DBTT above the operating temperatures, it may perform well in warmer conditions but could become dangerously brittle in colder weather, leading to potential collapse.The ductile brittle transition temperature varies between different materials and is influenced by factors such as composition, microstructure, and temperature. For example, certain alloys may have a higher DBTT compared to pure metals. By carefully selecting materials and considering their DBTT, engineers can design safer and more reliable systems. To assess the ductile brittle transition temperature of a material, various tests can be conducted, including Charpy impact tests and tensile tests at different temperatures. These tests provide valuable data that help predict how a material will behave under various environmental conditions. Additionally, advancements in technology and material science have led to the development of new alloys and composites that exhibit improved toughness and lower DBTT, expanding the range of applications for these materials.In conclusion, the ductile brittle transition temperature is a fundamental concept that plays a vital role in material selection and engineering design. By understanding and applying this knowledge, engineers can create safer, more effective products and structures that withstand the rigors of their intended environments. As research continues to evolve, the insights gained from studying the DBTT will undoubtedly lead to innovations in material science, enhancing the performance and longevity of various applications.

“脆韧转变温度”这一概念在材料科学和工程领域至关重要。它指的是材料从韧性状态（在应力下可以发生塑性变形）转变为脆性状态（在没有显著变形的情况下断裂）的温度。理解这一转变对于从事金属和聚合物工作的工程师和设计师至关重要，因为它直接影响到结构和组件的性能与安全。当材料处于其“脆韧转变温度”以上时，它表现出韧性，能够吸收能量并在断裂前经历显著的变形。这一特性在材料受到动态载荷或冲击的应用中尤为重要，例如在建筑和汽车工业中。韧性材料可以弯曲和拉伸，在失效之前提供警告，这是许多工程应用中所期望的特性。相反，当材料处于其“脆韧转变温度”以下时，材料变得脆性。在这种状态下，它们更容易在受到应力时突然断裂，通常没有任何失效的先兆。这种行为可能导致结构、机械和其他关键组件的灾难性故障。例如，如果一座桥梁使用的钢材在工作温度下具有较高的脆韧转变温度，那么在温暖条件下它可能表现良好，但在寒冷天气中可能变得危险脆弱，导致潜在的坍塌。“脆韧转变温度”因不同材料而异，并受到成分、微观结构和温度等因素的影响。例如，某些合金的脆韧转变温度可能比纯金属高。通过仔细选择材料并考虑其脆韧转变温度，工程师可以设计出更安全、更可靠的系统。为了评估材料的“脆韧转变温度”，可以进行各种测试，包括查尔皮冲击试验和不同温度下的拉伸试验。这些测试提供了宝贵的数据，有助于预测材料在各种环境条件下的表现。此外，科技和材料科学的进步导致新合金和复合材料的发展，这些材料表现出更好的韧性和较低的脆韧转变温度，扩展了这些材料的应用范围。总之，“脆韧转变温度”是一个基本概念，在材料选择和工程设计中发挥着至关重要的作用。通过理解和应用这一知识，工程师可以创造出更安全、更有效的产品和结构，能够承受其预期环境的严酷考验。随着研究的不断发展，从研究脆韧转变温度中获得的见解无疑将推动材料科学的创新，提高各种应用的性能和耐用性。