hypereutectic

简明释义

英[ˌhaɪpəjʊˈtektɪk]美[ˌhaɪpərjʊˈtektɪk]

adj. 过共晶的，过低熔的

n. 高级低共熔体

英英释义

单词用法

同义词

反义词

例句

1.Hypereutectic Al-Si alloy with the quality of low density, good heat stability and high wear-resistance, is an ideal wear-resistant and heat-resistant material.

过共晶铝硅合金具有低密度、良好的热稳定性和高耐磨性，是一种理想的耐磨耐热材料。

2.Therefore, in thin section castings, for eliminating eutectic carbides and obtaining ferritic matrix, melts treated by re need high carbon content and hypereutectic composition.

在薄壁铸件中获得无游离渗碳体和铁素体基体的稀土球铁的关键是高碳过共晶原铁水。

3.The main forming methods of hypereutectic Aluminum-Silicon alloys are Ingot Metallurgy (IM) and Powder Metallurgy (PM) at the present time, but both of them have autologous deficiencies.

目前过共晶铝硅合金成形方法主要有铸锭冶金法和粉末冶金法，但这两种方法都存在其自身的不足。

4.When the alloys are hypereutectic alloys, the vanadium carbides are even distribution.

合金为过共晶成分时碳化钒均匀分布。

5.The main forming methods of hypereutectic Aluminum-Silicon alloys are Ingot Metallurgy (IM) and Powder Metallurgy (PM) at the present time, but both of them have autologous deficiencies.

目前过共晶铝硅合金成形方法主要有铸锭冶金法和粉末冶金法，但这两种方法都存在其自身的不足。

6.The modifying experiments on hypereutectic Al - Si alloy were made by addition of sodium flux and P - Cu alloy.

用磷铜合金和四元钠盐变质剂对过共晶铝硅合金进行了变质处理试验。

7.The result indicated that: 1. P-RE combination modification can modify both the eutectic Si and primary Si of the hypereutectic Al-Si alloy at the same time.

研究结果表明：1. P - RE复合变质对过共晶铝硅合金的初晶硅和共晶硅都具有良好的变质和细化作用。

8.The cooling rate during solidification affects whether an alloy is hypereutectic 过共晶 or not.

固化过程中的冷却速率会影响合金是否为hypereutectic 过共晶。

9.In the study of metal casting, hypereutectic 过共晶 alloys are known for their improved wear resistance.

在金属铸造研究中，hypereutectic 过共晶 合金以其优良的耐磨性而闻名。

10.The hypereutectic 过共晶 structure can lead to enhanced mechanical properties in certain applications.

在某些应用中，hypereutectic 过共晶 结构可以导致机械性能的增强。

11.The alloy was classified as hypereutectic 过共晶 due to its high silicon content.

由于其高硅含量，该合金被归类为hypereutectic 过共晶。

12.When designing a piston, engineers often choose hypereutectic 过共晶 aluminum for its strength and thermal stability.

在设计活塞时，工程师通常选择hypereutectic 过共晶 铝，以获得其强度和热稳定性。

作文

In the field of materials science, understanding the various phases and compositions of alloys is crucial for developing new materials with desirable properties. One such important concept is that of the hypereutectic alloy. A hypereutectic alloy is defined as an alloy that contains more of the solute than is found in the eutectic composition. This characteristic can significantly impact the microstructure and mechanical properties of the material. For instance, when a hypereutectic alloy solidifies, it forms a structure that includes a primary phase along with a eutectic mixture. This unique combination often results in enhanced hardness and wear resistance compared to eutectic or hypoeutectic alloys.The study of hypereutectic alloys is particularly relevant in industries where strength and durability are paramount. For example, in the automotive sector, components made from hypereutectic aluminum-silicon alloys are commonly used in engine blocks and cylinder heads. The presence of silicon in these alloys not only improves fluidity during casting but also contributes to the overall mechanical properties, making them suitable for high-performance applications.Moreover, the solidification behavior of hypereutectic alloys can lead to the formation of complex microstructures that enhance their performance. During cooling, the primary phase precipitates first, followed by the eutectic phase. This sequential solidification process can lead to a refined grain structure, which is beneficial for the mechanical strength of the material. Understanding how to manipulate the cooling rates and alloy compositions can allow engineers to tailor the properties of hypereutectic alloys for specific applications.In addition to their mechanical advantages, hypereutectic alloys can also exhibit improved corrosion resistance. The microstructural features that arise from their composition can create barriers to corrosive agents, thereby extending the lifespan of components made from these materials. In environments where exposure to harsh chemicals or moisture is common, the use of hypereutectic alloys can be a strategic choice.However, working with hypereutectic alloys does come with challenges. The increased amount of solute can lead to issues such as segregation during solidification, which can adversely affect the uniformity of the properties throughout the material. Therefore, careful control of the casting process and subsequent heat treatments is essential to mitigate these effects and ensure that the desired characteristics are achieved.In conclusion, hypereutectic alloys represent a fascinating area of study within materials science. Their unique compositions and resulting microstructures provide opportunities for innovation across various industries. As research continues to advance, the potential applications for hypereutectic alloys will likely expand, leading to the development of even more advanced materials that can meet the demands of modern technology. Understanding the principles behind hypereutectic alloys will be essential for engineers and scientists alike as they strive to push the boundaries of what is possible in material design and application.

在材料科学领域，理解合金的各种相和成分对于开发具有理想特性的材料至关重要。其中一个重要概念是过共晶合金。过共晶合金被定义为含有比共晶成分更多溶质的合金。这一特性可以显著影响材料的微观结构和机械性能。例如，当过共晶合金固化时，会形成一个包括主要相和共晶混合物的结构。这种独特的组合通常会导致相较于共晶或亚共晶合金更高的硬度和耐磨性。过共晶合金的研究在对强度和耐久性要求极高的行业中尤为相关。例如，在汽车行业，使用过共晶合金铝硅合金制造的部件常用于发动机缸体和缸盖。硅的存在不仅改善了铸造过程中的流动性，还增强了整体机械性能，使其适合高性能应用。此外，过共晶合金的固化行为会导致形成复杂的微观结构，从而提高其性能。在冷却过程中，主要相首先析出，然后是共晶相。这一顺序固化过程可以导致细化的晶粒结构，这对材料的机械强度是有益的。了解如何操控冷却速率和合金成分，可以使工程师为特定应用量身定制过共晶合金的性能。除了机械优势外，过共晶合金还可以表现出更好的耐腐蚀性。由其成分产生的微观结构特征可以为腐蚀介质创造障碍，从而延长由这些材料制成的组件的使用寿命。在暴露于苛刻化学物质或潮湿环境的情况下，使用过共晶合金可以是一个战略选择。然而，使用过共晶合金也面临挑战。溶质的增加可能导致固化过程中的偏析问题，这可能会不利于材料各部分性能的均匀性。因此，仔细控制铸造过程和后续热处理对于减轻这些影响并确保实现所需特性至关重要。总之，过共晶合金代表了材料科学中的一个迷人领域。它们独特的成分和随之而来的微观结构为各个行业的创新提供了机会。随着研究的不断推进，过共晶合金的潜在应用可能会扩展，导致开发出更先进的材料，以满足现代技术的需求。理解过共晶合金背后的原理将对工程师和科学家在材料设计和应用的边界不断推进中至关重要。