1) intergranular
晶界型
1.
Mechanism of strengthening and toughening of ZTA ceramic nanocomposites was summarized in this article, which include dispersion strengthening, phase transformation toughening, tiny crack toughening, among them ,mechanism of dispersion strengthening comprising intragranular toughening and intergranular toughening.
包括 :弥散增韧机理、相变增韧机理、微裂纹增韧机理三种机理 ,其中弥散增韧机理又包括“内晶型”增韧机理和“晶界型”增韧机理两
2) grain boundary allotriomorphic ferrite
仿晶界型铁素体
1.
The feasibility and prospect for industrialization has been studied for weldable low carbon high strength hot-rolled reinforced bar with grain boundary allotriomorphic ferrite/granular bainite duplex microstruture.
探索了仿晶界型铁素体/粒状贝氏体复相钢用于制造热轧低碳高强度可焊钢筋的可行性与工业化前景。
2.
The presence of grain boundary allotriomorphic ferrite can increase the compatible deformation capability of duplex microstructure, improve the crack initiation energy under impact loading; i.
研究了仿晶界型铁素体/粒状贝氏体复相钢轧态组织的韧性与裂纹扩展特点。
3.
The development of high strength low alloy (HSLA) steel plate is reviewed in this paper, and comments on several typical HSLA steels are presented Based on rolling process and theories of duplex microstructure strengthening and toughening, a new microstructure design for high strength steel plate—grain boundary allotriomorphic ferrite/granular bainite (F GAB /B G ) duplex microstructure is propose
回顾了高强度低合金中厚钢板的发展历程 ,评述了几类典型的高强度低合金钢 ,并基于钢的轧制工艺与复相组织强韧化理论 ,提出了一种新的高强度中厚钢板组织设计——仿晶界型铁素体 /粒状贝氏体 ( FGBA/BG)复相组织。
3) grain boundary
晶界
1.
Dynamic process simulation of solute grain boundary segregation;
溶质原子晶界偏聚动力学过程的数值模拟
2.
Methodological probe into grain boundary etching of molybdenum disilicide based materials;
二硅化钼基材料的晶界腐蚀方法探讨
4) crystal boundary
晶界
1.
The chemical composition at the crystal boundary of transparent ceramics was observed and the concentration distribution of rare earth oxide in stable state was measured by electron microprobe analysis.
以ＥＰＭＡ法观测透明陶瓷晶界处的化学组成及稀土氧化物的定态浓度分布，用非平衡态热力学理论分析晶界偏析行为。
2.
Al_2O_3distributed along crystal boundary,silicate impurities,separated carbon compound and σ phase together brought about crystal boundary weakening and resulted in high sensitivity for interdendritic corrosion.
沿晶界分布的A l2O3和硅酸盐杂质、析出碳化物、σ相,它们共同构成了晶界弱化的因素,致使晶间腐蚀的敏感性加大。
3.
The application of electroscope and pulse polishing technology enables the field ion microscope atomprobe (FIM AP) on the sample to locate itself successfully the crystal boundary, moreover, makes the dialing subatomprobe in the range to be efficiently analyzed.
应用电子显微镜和脉冲抛光技术 ,成功控制了晶界在场离子显微镜—原子探针试样中的位置 ,使其处于场离子显微镜—原子探针的有效分析范围内。
5) grain-boundary
晶界
1.
Study on the grain-boundary strengthening model of polycrystalline materials;
多晶体材料的晶界强化模型研究
2.
Based on the existing grain-boundary segregation thermodynamics and kinetics, and according to thermodynamics second law, Fick's diffusion laws, and local equilibrium theory, a model is developed to calculate the solute grain- boundary segregation kinetics.
本文在现有晶界偏聚热力学和动力学模型的基础上,根据热力学定律、菲克扩散定律及局部平衡理论,建立起溶质原子晶界偏聚动力学模型。
3.
Some of recent progress were summarized, including the preparation of nanosized powder, highly strengthened ceramic with submicrometer grain structure obtained via spark-plasma sintering method, improved conductivity of grain-boundary via precursor scavenging of two-stage sintering, and a pseudoternary stabilized 5%In2O3-8%Y2O3-ZrO2(all percentages in formula are mole percentage) system.
稳定氧化锆作为固体氧化物燃料电池的电解质是最好的可用材料,介绍了这方面的研究进展,包括:纳米粉的制备,火花等离子体烧结法获得亚微米晶粒结构的高强度陶瓷,二次烧结前体清除法改善晶界的电导率和一个准三元系稳定的5% In2O3-8%Y2O3-ZrO2(式中均为摩尔百分数)。
6) grain boundaries
晶界
1.
The effect of grain boundaries on magnetic and transport properties in colossal magnetoresistance particle film;
晶界对庞磁电阻颗粒薄膜的磁学和输运性能的影响
2.
Segregation and interaction of rare earth and iron elements on grain boundaries in ZA27 alloys;
ZA27合金中稀土及铁的晶界偏聚与交互作用
3.
In order to reveal the behaviors of Fe and RE atoms on grain boundaries in ZA27 alloy theoretically, the atomic structure model of high angle grain boundary of α phase in ZA27 alloy was set up by using the concept of coincidence-site lattice(CSL).
为从理论上揭示铁、稀土元素在锌铝合金晶界处的行为本质,建立了ZA27合金中α相大角度重位点阵晶界模型,利用递归法(Recursion)计算了晶界的电子结构(状态密度、费米能级、结构能)。
参考词条
补充资料：高温合金晶界强化
高温合金晶界强化
grain boundary strengthening of superalloy
gaowen heJ一n]Ingjleq旧nghuo高温合金晶界强化(grain boundarystrengthening of superalloy)添加微量元素改善晶界状态达到高温合金强化的目的。晶界的晶体结构不规则，原子排列混乱，晶格歪扭，又存在各种晶体缺陷(如位错、空洞等)，因此晶界在高温变形时是一个薄弱环节。在高温蠕变时，晶界形变量占总形变量的5。%，因此强化晶界就成为高温合金强化的一个重要部分。一些有害杂质元素的溶解度很小且往往偏析于晶界，生成低熔点共晶化合物。硫在y一Fe中的溶解度只有0.015%。因此合金中所含的硫在铁中易形成熔点为988C的Fe十FeS低熔点共晶。硫在镍中会形成熔点只有644C的Ni+Ni3S:共晶。这些低熔点共晶在晶界的形成会大大恶化合金的热加工性能和高温热强性。通常高温合金中的硫含量控制在0.015%以下，优质高温合金控制在0.005%~。 .007写以下。美国宇航材料标准AMS228。规定镍基高温合金必须满足杂质控制标准，要求秘、佗、啼、铅、硒5个元素含量分别在(0.5~5)浓10一6以下，同时对锑、砷、锡、稼、锗、金、锢、汞、钾、钠、社、银、锡、铀、锌等15个微量杂质元素的含量分别控制在50x10一6以下，其总和还不允许超过4。。\10一6。为了消除有害杂质和气体的不利作用，进一步净化和强化晶界，可以加入一些微量元素，诸如硼、错、铅、镁、钙、钡、斓和饰等。硼在晶界偏聚，形成M3B:硼化物(见高温合金材料的间隙相)进行强化。硼能抑制晶界片层状、胞状析出相以及改善碳化物密集不均匀分布的状态，因而对热强性有利。铁、镍基高温合金中硼含量总在。.05%以下，通常控制在0.01%~。.02%左右。铸造高温合金中硼含量略高，一般可达。.02%一0.03%左右。错和硼有类似作用，但其效果不如硼大。镁是晶界偏聚元素，使晶界碳化物呈颗粒状分布，因而阻止沿晶裂纹的快速扩展，有利于热强性。镁使高温合金的蠕变第二阶段延长，第三阶段扩展，因而获得高的塑性和长的断裂寿命。由于镁使持久断裂塑性提高，可以大大改善持久缺口敏感性。镁还有去除杂质元素的洁净作用。镁、钙、钡、斓和柿等元素由于化学性活泼，与氧有很大的亲和力，可以在冶炼过程中起良好的脱氧去气作用，又能和一些低熔点杂质生成密度较小的难熔化合物，消除有害杂质在晶界的不利作用。这些微量元素的加人量都有一个最佳量，过量加入反而会使热强性下降。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。