PARTIAL-ISOTHERMALLY-TREATED LOW ALLOY ULTRAHIGH STRENGTH STEEL WITH MARTENSITIC/BAINITIC MICROSTRUCTURE

机译：用马氏体/贝氏体微观结构部分等温处理的低合金超高强度钢

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We introduce a new strengthening heat treatment of a Ni-Cr-Mo-V alloyed spring steel by partial isothermal salt-bath and subsequent air-cooling and tempering. Detailed isothermal treatments were made at temperatures below or above the Ms point (230°C). The salt bath time was controlled between 10 and 80 minutes. Through the new treatment, the candidate steel developed ultrahigh tensile strength ～2,100 MPa, yield strength ～1,800 MPa, elongation 8-10%, hardness 580-710 HV, and V-notch Charpy toughness 10-12 J. Optical and electron microscopic observations and X-ray diffraction revealed multi-phase microstructures of bainitic/martensitic ferrites, fine carbide precipitates and retained austenite. Carbon partitioning during the bainitic/martensitic transformation was investigated for its remarkable influence on the strengthening mechanism.

机译：我们通过部分等温盐浴和随后的空气冷却和回火引入了Ni-Cr-Mo-V合金弹簧钢的新加强热处理。在低于MS点（230℃）的温度下进行详细的等温处理。盐浴时间在10到80分钟之间控制。通过新的处理，候选钢制造出超高拉伸强度〜2,100MPa，产强度〜1,800MPa，伸长率为8-10％，硬度580-710 HV，V-Notch夏比韧性10-12 J.光学和电子显微镜观察X射线衍射揭示了贝氏体/马氏体铁氧体的多相微观结构，细碳化物沉淀物和保留奥氏体。研究了贝氏体/马氏体转化期间的碳分区，以实现对增强机制的显着影响。

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《International Conference on High Strength Low Alloy Steels》|2016年||共6页
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Quanshun Luo; Matthew Kitchen; Vinay Patel; Martin Filleul; Dave Owens;
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中图分类 TF125-53;
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Ultra-High Strength Steels; Multi-Phase Microstructure; Isothermal Heat Treatment; X-Ray Diffraction; Scanning Electron Microscopy;

机译：超高强度钢;多相微观结构;等温热处理;X射线衍射;扫描电子显微镜;

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1. Three-dimensional characterization of bainitic microstructures in low-carbon high-strength low-alloy steel studied by electron backscatter diffraction [J] . J.S. Kang, Jae-Bok Seol, C.G. Park Materials Characterization . 2013,第Null期

机译：低碳高强度低合金钢中贝氏体组织的三维表征
2. Effects of the Addition of Cr, Mo and Ni on the Microstructure and Retained Austenite Characteristics of 0.2% C-Si-Mn-Nb Ultrahigh-strength TRIP-aided Bainitic Ferrite Steels [J] . Junya KOBAYASHI, Daiki INA, Nobuo YOSHIKAWA, ISIJ international . 2012,第10期

机译：Cr，Mo和Ni的添加对0.2％C-Si-Mn-Nb超高强度TRIP辅助贝氏体铁素体钢组织和残余奥氏体性能的影响
3. Effects of the Addition of Cr, Mo and Ni on the Microstructure and Retained Austenite Characteristics of 0.2% C–Si–Mn–Nb Ultrahigh-strength TRIP-aided Bainitic Ferrite Steels [J] . Junya Kobayashi, Daiki Ina, Nobuo Yoshikawa, ISIJ international . 2012,第10期

机译：Cr，Mo和Ni的添加对0.2％C–Si–Mn–Nb超高强度TRIP辅助贝氏体铁素体钢组织和残余奥氏体特性的影响
4. PARTIAL-ISOTHERMALLY-TREATED LOW ALLOY ULTRAHIGH STRENGTH STEEL WITH MARTENSITIC/BAINITIC MICROSTRUCTURE [C] . Quanshun Luo, Matthew Kitchen, Vinay Patel, International Conference on High Strength Low Alloy Steels . 2016

机译：用马氏体/贝氏体微观结构部分等温处理的低合金超高强度钢
5. Tempering Response of Mixed Martensitic/Bainitic Microstructures in Quench and Tempered Plate Steels [D] . Vieira, Igor. 2018

机译：混合马氏体/贝氏体微观结构在淬火和钢板钢中的回火响应
6. Experimental determination of TRIP-parameter K for mild- and high-strength low-alloy steels and a super martensitic filler material [O] . Sebastian Neubert, Andreas Pittner, Michael Rethmeier -1

机译：低强度和高强度低合金钢和高马氏体填充材料的TRIP参数K的实验测定
7. Effects of Start and Finish Cooling Temperatures on Microstructure and Mechanical Properties of Low-Carbon High-Strength and Low-Yield Ratio Bainitic Steels [O] . Hyo Kyung Sung, Sunghak Lee, Sang Yong Shin 2013

机译：起始冷却温度对低碳高强度和低屈服比贝氏体钢的微观结构和力学性能的影响

PARTIAL-ISOTHERMALLY-TREATED LOW ALLOY ULTRAHIGH STRENGTH STEEL WITH MARTENSITIC/BAINITIC MICROSTRUCTURE

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