stivali ugg Microalloyed tempered steel 30Mn2V def

Microalloyed tempered steel 30Mn2V deformed austenite recrystallization zone is not σ-ε curve and phase change characteristics of

Line from the austenite recrystallization into a dynamic recovery, and can be confirmed by the microscopic observation. (2) When the deformation temperature of 700 ℃, the austenite non-steady state, the reduction rate of more than 6O, then it may cause deformation induced ferrite, resulting in decreased deformation resistance, reflected in the curve, for the second a weak peak pressure F ratio map 5700 ℃, 1.0s' 0 of a curve when the value of the stress appears. (3) organization observed at room temperature deformation of ferrite is similar to the organization, not a real deformation of ferrite, in fact, in the cooling process,[link widoczny dla zalogowanych], the ferrite precipitation along the deformation zone, and grew up along the deformation zone results; When the phase variable reaches 6O more, even if the deformation induced ferrite precipitation, but the deformation is not obvious. References: [1] Yang Zhongmin, Yan Zhao, Rui-Zhen Wang, et al. Deformation induced ferrite formation mechanism [J]. Metals, 2000, (36) 8:1819. [2] MintzB, LewisJ, JonasJJ. Importanceofdeformationinducedferriteandfactorswhichcontrolitsformation [J]. Mat. SCi. Tech. , 1997,13:379. [3] Yong Qi Long, MA Ming map, Wu Baorong. Micro-alloy steel of a physical and mechanical metallurgy [M]. Beijing: Mechanical Industry Press, 1989. [4] Wang Youming, Liman Yun, Wei light. Steel, controlled rolling and controlled cooling [M]. Beijing: Metallurgical Industry Press, i995. . . (Continued from page 3) [3] FoctJ, RochengudeP, HendryA. AuthorsResponsetOCommentson: LowTemperatureAgingofFe-NAustenite [J]. ScriptaMetal-lurgica. ,[link widoczny dla zalogowanych], 1989,23:613. [4] KwanHHan, YoungKSong. Structureoffreshlyfofreshlyformedandlow-temperatureagedFe-Naustenite [J]. MaterialsScienceandEngineering,[link widoczny dla zalogowanych], 1999, A26o (1-2): 246. [5] BellT. KinaliM, MunstermanG. Physicalmetallurgyaspectsoftheausteniticnitr0carburisingprocess [J]. HeatTreatmentofMetals,[link widoczny dla zalogowanych], 1987, (2): 47. [6] Yang Xuebin, Qiao Yinan, Kong Cuirong. NC alloying austenite layer in Fe-c-N Bainite [J]. Thermal processing technology, 1995, (6): 21. [7] Han Fumei, Hu Mingjuan, PAN Jian-sheng, et al. Isothermal decomposition of high nitrogen austenite [J]. Thermal processing technology, 2000, (2): 3. [8] HuMJ, PanJS, ZhuZC, eta1. Morphologyofspecialphasetransformationproductsinhighnitrogenaustenite [C]. ConfPro-ceedingofthe12thIFHTSEcongress [A]. Melbourne, Australi-a: 2000. [9] HuMJ,[link widoczny dla zalogowanych], PanJS, ZhuZC, eta1. ASpecialPhaseTransformationPhenomenoninHigh-nitrogenAustenlte [J]. MaterialsLetters, 2001,9:225. [10] PAN Jian-sheng, Qiu Spring City, Hu Mingjuan, et al. Precipitation of Fe-N austenite preliminary study nanoscale phenomena [J]. Materials and Heat Treatment, 2001, (2): 1. [11] BellT. MartensiteTransformationStartTemperatureinIron-NitrogenAlloys [J]. JournalofTheIronandSteelInstitute, 1968, (10): 1017. . .

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