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钒对Ti-Mo微合金化高强度钢析出行为的影响

Effect of V on the Precipitation Behavior of Ti-Mo Microalloyed High-Strength Steel.

作者信息

Han Ruyang, Yang Gengwei, Xu Deming, Jiang Lu, Fu Zhixiang, Zhao Gang

机构信息

The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China.

Institute for Frontier Materials Geelong, Deakin University, Waurn Ponds, VIC 3216, Australia.

出版信息

Materials (Basel). 2022 Aug 29;15(17):5965. doi: 10.3390/ma15175965.

DOI:10.3390/ma15175965
PMID:36079357
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9456629/
Abstract

In this work, the precipitates in Ti-Mo-V steel were systematically characterized by high-resolution transmission electron microscopy (HRTEM). The thermodynamics and kinetics of precipitates in Ti-Mo and Ti-Mo-V steels were theoretically analyzed, and the effect of vanadium on the precipitation behavior was clarified. The results showed that the precipitation volume fraction of the Ti-Mo-V steel was significantly higher than that of Ti-Mo steel. The randomly dispersed precipitation and interphase precipitation (Ti, Mo, V)C particles coexisted in the Ti-Mo-V steel. When the temperature was higher than 872 °C, the addition of vanadium could increase the driving force for (Ti, Mo, V)C precipitation in austenite, resulting in an increased nucleation rate and shortened incubation period, promoting the (Ti, Mo, V)C precipitation. When the temperature was lower than 872 °C, the driving force for (Ti, Mo, V)C precipitation in austenite was lower than that for (Ti, Mo)C precipitation, and the incubation period of (Ti, Mo, V)C precipitation was increased. Moreover, it was also found that the precipitated-time-temperature curve of (Ti, Mo, V)C precipitated in the ferrite region was "C" shaped, but that of (Ti, Mo)C was "ε" shaped, and the incubation period of (Ti, Mo, V)C was significantly shorter than that of (Ti, Mo)C.

摘要

在本工作中，采用高分辨率透射电子显微镜（HRTEM）对Ti-Mo-V钢中的析出相进行了系统表征。从理论上分析了Ti-Mo钢和Ti-Mo-V钢中析出相的热力学和动力学，并阐明了钒对析出行为的影响。结果表明，Ti-Mo-V钢的析出体积分数明显高于Ti-Mo钢。Ti-Mo-V钢中同时存在随机分布的析出相和相间析出的（Ti, Mo, V）C颗粒。当温度高于872℃时，钒的加入可增加奥氏体中（Ti, Mo, V）C析出的驱动力，导致形核率增加和孕育期缩短，促进（Ti, Mo, V）C析出。当温度低于872℃时，奥氏体中（Ti, Mo, V）C析出的驱动力低于（Ti, Mo）C析出的驱动力，且（Ti, Mo, V）C析出的孕育期增加。此外，还发现铁素体区析出的（Ti, Mo, V）C的析出时间-温度曲线呈“C”形，而（Ti, Mo）C的呈“ε”形，且（Ti, Mo, V）C的孕育期明显短于（Ti, Mo）C的孕育期。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/be509f85bc09/materials-15-05965-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/557e9162f504/materials-15-05965-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/a6f1c7a946e8/materials-15-05965-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/81c724128939/materials-15-05965-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/d0fb39b33a6a/materials-15-05965-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/2fd78b4e83aa/materials-15-05965-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/e9d4a8207bd9/materials-15-05965-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/2edaffa8ee96/materials-15-05965-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/5f9c5cc11963/materials-15-05965-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/422b891ebe3d/materials-15-05965-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/be509f85bc09/materials-15-05965-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/557e9162f504/materials-15-05965-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/a6f1c7a946e8/materials-15-05965-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/81c724128939/materials-15-05965-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/d0fb39b33a6a/materials-15-05965-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/2fd78b4e83aa/materials-15-05965-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/e9d4a8207bd9/materials-15-05965-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/2edaffa8ee96/materials-15-05965-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/5f9c5cc11963/materials-15-05965-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/422b891ebe3d/materials-15-05965-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57a4/9456629/be509f85bc09/materials-15-05965-g010.jpg

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