Revealing the two-step nucleation and growth mechanism of vanadium carbonitrides in microalloyed steels

被引：35

作者：

Wang, Hongcai ^{[1
]}

Li, Yujiao ^{[2
]}

Detemple, Eric ^{[3
]}

Eggeler, Gunther ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Inst Mat, Univ St 150, D-44801 Bochum, Germany

[2] Ruhr Univ Bochum, ZGH, D-44801 Bochum, Germany

[3] AG Dillinger Huttenwerke, Dept Heavy Plate Res, D-66763 Dillingen, Germany

来源：

SCRIPTA MATERIALIA | 2020年 / 187卷

关键词：

Vanadium carbonitrides (VCN); Nucleation; Twinning; Microalloyed steels; NANOMETER-SIZED CARBIDES; ATOM-PROBE; INTERPHASE PRECIPITATION; TRANSFORMATION; NB; MICROSTRUCTURE; AUSTENITE; EVOLUTION; CLUSTERS; PHASE;

D O I：

10.1016/j.scriptamat.2020.06.041

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Combining high-resolution transmission electron microscopy (HR-TEM) and 3-dimensional atom probe tomography (3D-APT), the early stages of nucleation and growth of vanadium carbonitrides (VCN) were revealed. VCN nucleation starts with locally distorted body-centered cubic (bcc) lattices due to a substitution of Fe atoms by V atoms, which results in the formation of an intermediate coherent crystal structure within the ferrite matrix. Misfit strain self-accommodation leads to twining within the VCN particles. As the particles grow, the precipitates gradually lose coherency and grow into discs or plates. Simultaneously, the intermediate crystal structure of the nucleus transforms into the equilibrium VCN-structure. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：350 / 354

页数：5

共 48 条

[11] Gault B., 2012, ATOM PROBE MICROSCOP, DOI [10.1007/978-1-4614-3436-8, DOI 10.1007/978-1-4614-3436-8]
[12] Behavior of molecules and molecular ions near a field emitter
Gault, Baptiste
Saxey, David W.
Ashton, Michael W.
Sinnott, Susan B.
Chiaramonti, Ann N.
Moody, Michael P.
Schreiber, Daniel K.
[J]. NEW JOURNAL OF PHYSICS, 2016, 18
[13] Single-Particle Mass Spectrometry of Titanium and Niobium Carbonitride Precipitates in Steels
Hegetschweiler, Andreas
Borovinskaya, Olga
Staudt, Thorsten
Kraus, Tobias
[J]. ANALYTICAL CHEMISTRY, 2019, 91 (01) : 943 - 950
[14] Ultrastrong steel via minimal lattice misfit and high-density nanoprecipitation
Jiang, Suihe
Wang, Hui
Wu, Yuan
Liu, Xiongjun
Chen, Honghong
Yao, Mengji
Gault, Baptiste
Ponge, Dirk
Raabe, Dierk
Hirata, Akihiko
Chen, Mingwei
Wang, Yandong
Lu, Zhaoping
[J]. NATURE, 2017, 544 (7651) : 460 - +
[15] The Directional Dependence of Elastic Stiffness and Compliance Shear Coefficients and Shear Moduli in Cubic Materials
Knowles, Kevin M.
Howie, Philip R.
[J]. JOURNAL OF ELASTICITY, 2015, 120 (01) : 87 - 108
[16] KNOWLES KM, 1981, ACTA METALL MATER, V29, P101, DOI 10.1016/0001-6160(81)90091-2
[17] Kwiatkowski A., 2018, NAT COMMUN, P9
[18] A model for interphase precipitation in V-microalloyed structural steels
Lagneborg, R
Zajac, S
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (01): : 39 - 50
[19] On the origin of the improvement of shape memory effect by precipitating VC in Fe-Mn-Si-based shape memory alloys
Lai, M. J.
Li, Y. J.
Lillpopp, L.
Ponge, D.
Will, S.
Raabe, D.
[J]. ACTA MATERIALIA, 2018, 155 : 222 - 235
[20] Segregation of boron at prior austenite grain boundaries in a quenched martensitic steel studied by atom probe tomography
Li, Y. J.
Ponge, D.
Choi, P.
Raabe, D.
[J]. SCRIPTA MATERIALIA, 2015, 96 : 13 - 16

← 1 2 3 4 5 →