cementite相关论文
Comparison on wear resistance of nanostructured bainitic bearing steel with and without residual cem
The sliding wear property of high-carbon nanostructured bainitic bearing steel with the equal initial hardness and diffe......
Stages and Fracture Mechanisms of Lamellar Pearlite of 1 00-m-Long Differentially Hardened Rails Und
Using the methods of transmission electron microscopy,the carbide phase evolution in surface layers of the differentiall......
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Kinetic transitions and Mn partitioning during austenite growth from a mixture of partitioned cement
Austenite formation from a ferrite-cementite mixture is a crucial step during the processing of advanced high strength s......
The research aims to provide an alternative to austempering treatment of ductile cast iron with a simple and cost-effect......
Effect of Tempering Temperature on Microstructure and Mechanical Properties of Steel Containing Ni o
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
The cementite formation and coarsening behaviors of 0. 2 mass% C-5 mass% Mn steel during tempering at 500℃ were investi......
The microstructure and mechanical properties of medium carbon steel after cyclic heat treatment were investigated.The ef......
The pearlitic transformation and the deformation behavior of lamellar cementite after cold rolling in eutectoid steels F......
Nanoindentation measurement was performed to evaluate the local hardness distribution for quenched and tempered martensi......
A new steel making process through reduction and sintering treatment of cementite powder was proposed, and microstructur......
The influence of electropulsing on cementite decomposition in the spherical graphite iron has been studied.The results i......
The microstructures of the nanocrystalline surface layer of a quenched and high temperature tempered 0. 4 C- 1 Cr steel ......
Tempering is an important phenomenon in ferrous alloys. Most steels, especially alloy-ing steels, are used after quenchi......
The research aims to provide an alternative to austempering treatment of ductile cast iron with a simple and cost-effect......
用二元合金相图分析了合金在各温度点组织形态变化的趋势,阐述了30万t/a乙烯装置F0301裂解炉辐射炉管裂纹产生的根本原因,提出了具......
通过在透射电镜下明视场,暗视场,电子衍射结构分析,研究了工业纯铁在激冷条件下三次渗碳体的析出,结果表明:快速冷却不能完全抑制三次渗......
本文以几种不同的实验分析方法,初步研究了五台山显通寺云牌的合金成分及其组织的某些特征.......
利用表面研磨处理(SMAT)在共析钢上制备出具有纳米晶体结构的表面层,并利用X射线衍射和透射电镜分析了纳米表面层的微观组织结构及......
通过建立基于材料微观组织(代表性体积单元)的数值模型,对铁素体-碳化物钢的单向拉伸过程进行了数值模拟,分析了碳化物的含量及其带......
在实验室条件下研究了罩式退火和快速连续退火两种方式对含硼搪瓷钢微观组织、力学性能和抗鳞爆性能的影响.结果表明:适当增加Mn,S的......
低碳钢铆钉头部断裂,断口呈台阶状,分析表明,铆钉基体组织中渗碳体沿晶界分布,导致部分晶界脆化,极易在冷镦变形中发生层间错位、......
采用透射电子显微镜研究了爆炸焊接的TA1/16MnR板在16MnR钢侧附近渗碳体的形变。结果表明,渗碳体形变时按热力学机制分解。在严重形......
将5 mm厚的321奥氏体不锈钢板与23 mm厚的Qd370q D桥梁钢板进行了爆炸焊接。采用透射电镜研究了焊接界面的显微组织。结果表明,爆......
研究了热轧态及热轧后回火两种状态下10MnNiCr钢板的性能。通过光学显微镜、扫描电镜、透射电镜分析了回火工艺对材料组织及性能的......
重点从一贯制工艺着手对如何提高连续退火生产的铝镇静钢性能均匀性的措施进行了探讨,提出了加B、控制Mn的含量、采用U形卷取温度......
The microstructures of the nanocrystalline surface layer of a quenched and high temperature tempered 0. 4 C- 1 Cr steel ......
铁碳化物是很有希望的冶金产品和罐头是使用的 forsteelmaking 过程,在它作为一种选择玩的地方,有重要经济的原料有利。另外,它有许多......
为解决铸件的白口问题,从铁碳平衡图和合金结晶凝固原理出发,分析了化学成分、过冷度、合金元素、铸型介质、炉料等对产生白口的影响......
通过对断裂轧辊辊颈的化学成分、力学性能、断口及高低倍组织分析,认为碳含量较低和大面积条、网状渗碳体等缺陷是导致辊颈断裂的......
研究了G20Cr2Ni4钢制轴承圈渗碳淬火后裂纹形成的原因,结果证实,其机理主要是在渗碳空冷过程中表层由于渗碳体过多,导致大量的托氏体......
采用化学分析、金相检验和硬度测试等方法对转向器螺杆螺纹根部的裂纹进行了分析.结果表明,转向器螺杆渗碳处理及淬火后,螺杆表层......
对在冷弯试验中焊缝开裂的进1:2B70级直缝焊管进行了金相检验、焊缝断口形貌分析以及夹杂物成分分析。结果表明:焊缝中分布在铁素体......
利用透射电镜和化学相分析研究了降低Nb,V,Ni含量以及添加Mn对HD钢二次硬化的影响。研究结果表明,降低Nb,V,Ni后对二次硬化温度影响不大,但硬度升高。添......
对渗碳和离子注入两种工艺方法和作用进行了介绍,并对两种工艺方法进行了一定的比较,重点对近年来广泛应用的离子注入技术进行了推介......
拖拉机上的旋耕刀是农业机械上用得最多的耕作机具之一,它用于旋耕打土,易耗、易损。原为65Mn钢锻造,需大量优质钢材,且工艺较繁。要经锻造......
Research on the dissolution behavior of cementite in the GCr15 steel surface layer induced by surfac
Dissolution of cementite was found in the surface layer of 1.0C-1.5Cr steel plates during the process of surface mechani......
根据Fe—Fe3C相图分析铁碳合金在平衡状态下的显微组织,从纯铁的同素异构体到铁碳合金的基本相,从认识Fe—Fe3C相图到分析铁FeFe3C相......
利用金相显微镜、扫描电镜对SAPH440冲压开裂钢板进行分析,分析结果表明,钢板中混晶及珠光体偏析带的存在,加上晶界上析出渗碳体的......
从热力学角度证明了增加冷却速度促使过冷奥氏体分解析出纳米级渗碳体颗粒的可能性,应用轧后超快速冷却技术将实验钢传统组织中渗......
ML45钢钢坯冶金工厂轧钢生产线通过三阶段控制形变后可将钢的奥氏体晶粒超细化至平均直径5μm随后在短等温过程中,奥氏体的共析转变和形变......
为了研究碳钢中与铁素体交界的渗碳体(001)表面的表面层原子构成,采用Materials Studio软件中的CASTEP模块对从利用密度泛函理论优化......
本文根据钢的化学成分(主要是含碳量)对其组织和性能的影响,运用理论计算法来估算钢在退火状态下的大致硬度。......
Carburizing heat treatment is well used to increase the strength of gears and automobile drivetrain parts.When very high......
<正>Metal dusting attacks iron,low and high alloy steels and nickel-or cobalt-base alloys by disintegrating bulk metals ......
从奥氏体晶粒尺寸能够影响共析相变产物中渗碳体形状为基本出发点,研究了初轧-精轧两段式轧制中的精轧过程,以使奥氏体晶粒细化,生产时......
1.IntroductionCementiteprecipitatesiniron-carbonalloyduringtempering,andtwoorientationrelationships(ORs)betweenitandferr......
钢帘线生产过程中,要经过22道次的湿拉(水箱拉丝)。采用原子探针层析技术(APT)研究了钢帘线在不同应变条件下湿拉过程中渗碳体的特......
研究了渗碳体在白口铸铁轧制变形过程中的变化特点。结果表明:在高温轧制过程中,渗碳体同时经历了溶解、溶穿、变形和断裂的过程,渗碳......