查询词典 austenite

The morphology and structure of δ eutectoid and the transformation of δ austenite in high speed steel have been studied under SEM and TEM.

本文利用扫描电镜和透射电镜研究了高速钢中δ共析体的形态、结构及共析奥氏体的转变过程。

The object of the study was investigated the nanostructured precipitates and superparamagnetic properties of the γ-austenite face centered cubic Fe-9A1-30Mn-1C-0.5Si alloys, for which two kinds of specimens were solution-treated quenching in oil, and the S. T. quenching in oil then cold-forged 20%~50% strain, respectively.

本研究计画之目的，系探讨沃斯田铁面心立方结构之铁－9铝－30锰－1碳－0.5矽合金，两种试样时效热处理后内部微析出物显微结构与超顺磁性质之关系，两种试样分别为闯溶油冷与因溶油冷锻应变20%-50%，再同时於823K持温140天时效处理。

The cavitation erosion behavior of CrMnN ferri te-austenite duplex stainless steel in distilled water and 3%NaCl solution has b een investigated by using a magnetostrictive-induced cavitation facility.The fre e-corrosion potential and polarization curve under quiescent and cavitating cond ition have been measured by electrochemical technique.

利用磁致伸缩空蚀实验机研究了CrMnN双相不锈钢在3%NaCl溶液中的空蚀行为，采用电化学技术测量了静态和空蚀条件下的自腐蚀电位变化和动电位扫描极化曲线。

The effect of Al on microstructure evolution of a hypereutectoid steel(0.97%C) during deformation of undercooled austenite was investigated by hot uniaxial compression tests.

利用Gleeble 1500热模拟试验机进行单轴热压缩实验，研究了合金元素Al对过共析钢缓冷相变和过冷奥氏体动态相变组织的影响。

The atomic average binding energy and balance interatomic distance of iron clusters (for austenite,ferrite and martensite) were calculated by the interatomic pair potential.

并尝试用原子间相互作用对势研究铁团簇（奥氏体、铁素体和马氏体）的原子平均结合能和最近平衡原子间距。

The amount of ferrite increases at first and then decreases with increase of holding time as a result of inverse phase transformation from ferrite to austenite.

随着保温时间的增加铁素体量开始增加而后又减少，铁素体量减少是发生铁素体向奥氏体逆相变的结果。

The experiment results show that the microstructure of test cast steel is lath bainite and retained austenite at various tempering holding time.

结果表明。不同回火时间下材料的组织为贝氏体铁素体和残余奥氏体组成。2h以下回火材料的强度、韧性、硬度升高。

The formation of martensite is accomplished by the immigration of well-defined glissile interface (121)fcc type and its misfit dislocations can produce the lattice invariant deformation on the basis of phenomenal theory of martensitic crystallography, however, LID is retarded slightly after the migration of interphase (121)fcc, i.e.a thin plate-like zone exists without LID in martensite near the well-defined interface. When the temperature reduces to the Ms point, the lattice parameter of austenite matrix is √3/2 times that of the martensite without LID. This critical condition for spontaneous transformation agrees with that the stack fault energy in matrix is less than zero according to Olson and Cohen's nucleation model.

通过模型分析表明：fcc/bcc马氏体形核与长大过程是通过(121)fcc型择优界面推移进行的，界面上的错配位错可以完成马氏体晶体学唯象理论要求的点阵不变变形，但LID要稍滞后于界面迁移，即在马氏体形核与长大过程中推移界面新相一侧存在一未发生LID的新相薄区；当相变温度达到马氏体相变点Ms时，母相奥氏体与这一薄区的晶格常数比为√3/2，这一几何条件和Olson-Cohen形核模型中要求扩展位错层错区界面能γ≤0是等价的。

The main results were summarized as follows: 1 With the increase of cooling rate, full recrystallization during cooling became difficult to take place and the decrease in dislocation density became slow so that dislocation density in austenite remains higher before phase transformation occurred. 2 Compared with undeformed samples, the CCT diagram under deform conditions has a similar shape, but its position shifts leftwards.

计算结果表明：1随着冷却速率增大，低碳钢热变形后的冷却过程中再结晶变得越来越困难，位错密度的下降变慢，导致在相变前奥氏体中保留着较大的变形存储能；2奥氏体在经历热变形后的CCT曲线与未变形条件相比，明显向左上方偏移。

Deformation greatly promoted carbonitride isothermal precipitation and made C-curve shift leftwards. The position and shape of C-curve depended on the content of Nb and N to a great extent, C-curve shifted leftwards a little when N content increased and its nose temperature was raised with Nb content increased. 3 when cooling rate increased, start temperature and finish temperature of continuous cooling precipitation decreased, full precipitation became difficult to take place, the volume fraction of carbonitride precipitation decreased, molar fraction of Nb and C dissolved in austenite increased, and the precipitation grain was further refined. Deformation shorten precipitation start time during continuous cooling, raised precipitation start temperature, accelerated precipitation kinetics of carbonitrides.

计算表明：1在Fe—Nb—C系统中，随着温度的降低，析出相的平衡体积分数增加，溶解在奥氏体中的Nb、C的摩尔分数降低，析出相中C和Nb的原子分数的比值v增加；2变形大大促进了碳氮化物的等温析出，使C曲线左移，Nb和N的含量与C曲线的位置和形状有一定的关系，N含量的增加，使C曲线略有左移，而Nb的含量的增加使得C曲线的鼻子区上移；3随着冷却速率的增大，连续冷却析出的开始温度和结束温度均有所降低，并且析出变得越来越不充分，析出相体积分数明显减小，溶解在奥氏体中Nb和C的摩尔分数增大，析出相粒子被明显细化，变形大大缩短了CCP过程碳氮化物析出的开始时间，提高了析出的开始温度，促进了析出动力学。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失