grain-boundary segregation 中文意思是什麼
grain-boundary segregation
解釋
晶界偏析- grain : n 1 穀物，糧食〈英國叫 corn〉; 谷類植物。2 穀粒，籽粒。3 （沙、金、鹽等的）粒，顆粒，晶粒。4 些微...
- boundary : n 邊界，疆界，限界 （between）;（球場）邊線；界標；界限，范圍，分野。 aboundary dispute 邊界糾紛...
- segregation : n. 1. 分離；分開；隔離。2. 【化學】分凝；【物、冶】偏析；熔析；【生物學】分異。 【機械】離析性。3. （等位基因）分離。n. -ist （種族）隔離主義者。
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Based on these experiments, it may be claimed that there is segregation of sn to grain boundaries in 0. 15 % c steel during cooling from a high solution treatment temperature. this segregation reduces grain boundary cohesion, which results in low hot ductility and intergranular fracture
通過試驗和計算得出: sn在0 . 1swt . % c鋼中發生非平衡晶界偏聚的臨界時間為1245左右，臨界冷卻速率大約為8 / s ，與試驗結果基本一致。 -
In order to improve the properties of materials, one needs to understand the structural relationship between interface and matrix of the materials, such as interface atomic structure, misfit dislocation, chemical bond structure, stress field distribution, composition segregation etc. there are tremendous research works on the grain boundary and interface structures during last century and the sophisticated theory about grain boundary and interface, i. e. coincidence site lattice and 0 - lattice theories had been developed simultaneously
眾所周知，材料的宏觀性質是由其微觀結構所決定的，因此，為了改善材料的宏觀性能我們有必要弄清楚材料的界面與基體之間的結構關系，如界面的原子結構、失配位錯、化學鍵合、應力場的分佈等等。在上世紀，人們已對晶界和相界面結構進行了大量的研究，同時，相關的理論如「重位點陣」和「 o -點陣」理論也發展成熟。 -
The change regularity for performance and microstructure of low carbon steel is summarized. the main characteristic of the process is pearlite spheroidizing, increasing of grain boundary width, element segregation and carbide in grain boundary. the change of those microstructure causes the variance of the merchant performance
通過上述的研究工作，總結了火力發電廠用低碳鋼在長期運行期間性能與微觀結構的變化規律，提出以珠光體球化、晶界寬化、元素晶界偏聚及碳化物晶界析出為主要特徵的低碳鋼微結構變化規律，以及由此而引起的材料機械性能的變化。
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