查询词典 ferrite

The experiments showed that, the surface microstructure is plate martensite, and the subsurface microstructure is cryptocrystalline martensite. the transition zone contains mixed martensite, troostite and part of the nonmelting ferrite.

实验表明：改性层微观组织由表层至基体依次为：表面熔凝区为片状马氏体；均匀相变硬化区为隐晶马氏体；过渡区为混合马氏体、屈氏体和部分未熔的铁素体。

The experiments show that the remelting hardening layer consists of melting zone, quenching zone and heat affected zone. From surface to internal, the respective microstructures are extremely small hidden-crystal martensite and a few residual austenites, hidden-crystal martensite and carbides and residual austerite, martensite and backfire troostite and ferrite.

实验表明：熔凝硬化层由熔化区、相变硬化区和热影响区组成；由表及里组织分别为极细隐晶马氏体＋少量残余奥氏体、隐晶马氏体＋碳化物＋残余奥氏体、马氏体+回火屈氏体+铁素体。

Under the experiment conditions, when the amount of undissolved ferrite is 10%, the contact, impact and bending fatigue life will be the longest.

在文中试验条件下，未溶铁素体含量达到最佳值(10%)时，三种试样的疲劳寿命皆为最高。

The effect of undissolved ferrite amount on contact, impact and bending fatigue properties were studied. The stress relaxation and grain refinement due to occurring of plastic deformation are main reasons of improving the fatigue life.

就未溶铁素体含量对接触疲劳、多冲疲劳及弯曲疲劳性能的影响机理进行研究，局部的应力集中因铁素体发生塑变而得到松弛和细化晶粒是提高疲劳寿命的主要原因。

M+F dual-phase structures were gained through subcritical quenching in 42CrMo steel The amount of undissolved ferrite were 0%, 3%, 10%, 15% and 20%, respectively.

用42CrMo钢经亚温淬火获得马氏体＋未溶铁素体双相组织，未溶铁素体含量分别为0%、3%、10%、15%和20%。

It was found that bainitic transformation unit s and ferrite plates which these units form, are much coarsened and their morphologies are greatly modified under the influence of this external stress.

为揭示贝氏体相变机制及外加应力对它的影响，采用透射电镜研究了140MPa的外加拉应力对中碳低合金钢35MV7的450°C等温贝氏体相变组织形貌的影响。

The result showed that morphologies of casting microstructures were all various residual δ-ferrite with the form of skeletal, lathy and vermiculate respectively inward into casting slabs on the austenitic matrix.

结果表明，连铸坯表面层上的组织均为在奥氏体基体上分布着不同形态的残余δ铁素体，由表及里δ铁素体的形态分别为骨架形，侧板条状和蠕虫状。

The melting zone in explosive consolidating HSS sample has heen investigated by TEM and SEM, and founds the solidifying structure of the liquid phase is consisted by δ-ferrite and carbide that are uniformity and disper. It shows the solidifying rate of the liquid phase is very rapid. and is higher than the cooling rate of the casting and atomization of nitrogen.

对高速钢爆炸固结样品中熔化区用扫描电镜、透射电镜研究发现：爆炸固结过程中形成液相的凝固组织为极其细小均匀的等轴δ-铁素体晶粒和碳化物，表明液相的凝固速度非常快，远远大于铸锭凝固的冷却速度和氮气雾化制粉的冷却速度。

It includes the following steps: extract trivalent iron ion and divalent iron ion in water phase through organic extractant, get predecessor of; absterge it with secondary distilled water for2-3 times and get pure load metal predecessor of organic phase; mix organic phase of Mg2 and Fe3 with mol rate of 1:2 and introduce them into autoclave, add distilled water according to the rate of 3:1 or 4:1 of organic phase and water phase and airproof it, and then mix it fiercely, stripping with hydrothermal method at temperature between 200 degree C and 300 degree C and make them react for 2.5 hours; cool it to the room temperature under natural condition, separate liquid and centrifugalize it, absterge it with absolute alcohol for 2-3 times and dry it at temperature of 50 degree C for 30-180 minutes, then get product of magnesium ferrite.

包括如下步骤：通过有机萃取剂来萃取水相中的三价铁离子和二价镁离子，制得有机相前驱物；用二次蒸馏水洗涤2-3次，获得纯净的负载金属有机相前驱物；按照Mg 2 和Fe 3 摩尔比1∶2将有机相混合均匀后引入高压釜中，按照有机相与水相的比例为3∶1或4∶1加入蒸馏水，密封后，对溶液进行强力搅拌，水热反萃的温度在200-300℃之间反应2.5小时；自然冷却至室温，分液，离心分离，用无水乙醇洗涤2-3次，在50℃下干燥30-180分钟，得铁酸镁产品。

The results show that the addition of Zr increases the content of acicular ferrite and improves the microstructure of weld metal.

结果表明，锆的加入增加了焊缝金属中针状铁素体的含量，改善了焊缝金属的微观组织。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。