1) DIFTrolling
变形诱导铁素体相变轧制
2) deformation induced ferrite transformation(DIFT)
形变诱导铁素体相变
1.
The microstructure evolution,precipitation behavior of carbonitride as microalloying element and its effects on deformation induced ferrite transformation(DIFT) of mild steels with various Nb,V(N) content were investigated on a Gleeble 1500 thermechanical simulator through multi-pass thermo-compression in the temperature range of 820～790℃ to simulate the finish rolling process of plates.
在Gleeble 1500热模拟机上,通过820~790℃温度范围内的多道次热压缩变形模拟了中厚板的精轧工艺,考察了不同铌、钒(氮)含量的低碳钢的组织演变过程、微合金元素的碳氮化物的析出行为和对形变诱导铁素体相变(DIFT)的影响。
3) deformation induced ferrite transformation
形变诱导铁素体相变
1.
A series of unidirectional compression tests of a low carbon steel Q235 were performed on a Gleeble 3500 thermal simulator, and the influences of strain, strain rate and deformation temperature (above the isothermal transformation temperature Ae3 from austenite to ferrite) on deformation induced ferrite transformation (DIFT) have been examined.
通过对低碳钢Q235的单向压缩实验,研究了应变、应变速率和变形温度(高于奥氏体铁素体平衡转变温度Ae3)对形变诱导铁素体相变的影响,通过光学显微镜、扫描电子显微镜和X射线衍射仪研究了热变形试样的微观组织结构,利用纳米压痕仪测定了形变诱导铁素体和先共析铁素体的纳米压痕硬度和弹性模量。
2.
In order to investigate the carbon diffusion during the deformation induced ferrite transformation, the electron probe microanalysis technique was used to measure the carbon concentration distribution in the microstructure of the specimen which experienced a hot compression process on the thermomechanical simulator (Gleeble 1500).
这表明在形变诱导铁素体相变过程中,碳没有发生明显的从铁素体向奥氏体扩散。
4) deformation induced ferrite transformation
变形诱导铁素体相变
1.
Effects of the status of Nb in deformed austenite on deformation induced ferrite transformation (DIFT) have been studied with Gleeble 2000 simulator, optical microscopy, TEM on pipeline steel X65.
通过Gleeble2000热模拟实验机,研究了X65管线钢中Nb在变形奥氏体中的析出状态对变形诱导铁素体相变(DIFT)的影响。
2.
The microstructure evolution during deformation induced ferrite transformation (DIPT) for a Nb mi croalloyed low carbon steel was investigated by thermal simulating tests, then compared with the microstructure evolution during continuous cooling transformation of work hardening austenite.
本文利用热模拟单向压缩实验,研究了一种Nb微合金钢变形诱导铁素体相变(DIFT)组织演变的基本特征,并与变形奥氏体连续冷却相变中的组织变化进行了比较。
5) deformation induced transformation ferrite
形变诱导铁素体
1.
The deformation characters and the evolution of deformation induced transformation ferrite of low carbon steel were studied.
在Gleeble-3500型热模拟试验机上对Q235钢进行了单向压缩试验,研究了不同温度下低碳钢的变形特征以及形变诱导铁素体的演变行为和在保温过程中的变化。
2.
The deformation character and evolution of deformation induced transformation ferrite of low carbon steel were studied.
研究了不同温度下低碳钢变形特征以及形变诱导铁素体演变行为和在保温过程中的变化。
6) deformation induced ferrite
形变诱导铁素体
1.
Phase Transformation Mechanism,Structure and Property of Pro-eutectoid Ferrite and Deformation Induced Ferrite of Low Carbon Steel;
低碳钢先共析铁素体和形变诱导铁素体的相变机制、组织和性能
2.
The results show that deformation induced ferrite(DIF) can be obtained through suitable deformation for medium carbon steel as deformation raises the transformation temperature from austenite to ferrite.
结果表明,中碳钢通过形变可获得形变诱导铁素体(DIF);形变提高奥氏体向铁素体转变温度,随着形变温度的降低,DIF含量呈反“S”形增加,即先缓慢增加,随后快速增加,当DIF量超过平衡态铁素体量时,其增加趋势趋缓。
3.
The results show that the formation of ultra-fine grains is resulting from the common effect of dynamic recrystallization and deformation induced ferrite (DIF).
结果表明：超细晶铁素体的获得主要是形变诱导铁素体和铁素体动态再结晶两种机制共同作用的结果在８７Ｏ－７６０℃低温８０％变形可以获得的等轴均匀超细品铁素体。
补充资料：轧制过程变形图示
轧制过程变形图示
deformation diagram of rolling process
zhazhi guoeheng bianxing tushi轧制过程变形图示(deformation diagram ofrolling proeess)轧制过程中，变形区内金属在高度方向、宽度方向及轧制方向的流动图。变形金属质点的流动受到变形区几何特征的影响。轧件高向压缩变形主要发生在后滑区(见后滑)，宽度方向变形也主要发生在后滑区。在后滑区，变形金属质点水平速度低于轧辊线速度水平分量，故金属质点相对轧辊表面向入口方向流动，形成后滑现象。在前滑区(见前滑)变形金属质点水平速度高于轧辊线速度水平分量，故金属质点相对轧辊表面向出口方向流动，形成前滑现象(见图)。由于板带轧制过程变形区长度z一般小于轧专 轧制过程变形图示件宽度B，长度方向上变形的摩擦阻力小于宽度方向摩擦阻力，使得轧制过程金属质点流动主要发生在延伸方向。 (余望)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条