蔡述巧,王勇帆,陈克鑫,纪宏志,谷大鹏,刘鑫刚

• 1:燕山大学机械工程学院
• 2:中国船舶集团有限公司第七〇三研究所

摘要(Abstract)：

在变形温度为850～1200℃,应变速率为0.005～0.5 s~(-1)及真应变为0.8的条件下，采用Gleeble-3800型热模拟试验机对18Cr2Ni4W钢进行热压缩试验，分析其真实应力-应变曲线，基于双曲正弦函数，建立了18Cr2Ni4W钢的热变形本构方程；采用动态材料模型(DMM),建立了18Cr2Ni4W钢在真应变为0.8时的热加工图。结果表明：18Cr2Ni4W钢在热加工过程中发生了动态再结晶，流变应力随着变形温度的升高而降低，随着应变速率的增加而增加；峰值应力随应变速率的降低和变形温度的升高而降低。失稳区主要集中分布于变形温度为860～950℃、应变速率为0.03～0.5 s~(-1)的范围内，其显微组织为沿变形方向拉长的带状组织，并存在局部流动性，对应的功率耗散η值较低，小于0.2;安全区的显微组织是典型动态再结晶组织，功率耗散η值较高，在0.28～0.49之间。在真应变为0.8时，18Cr2Ni4W钢最佳的热加工工艺为：变形温度为975～1050℃、应变速率为0.01～0.14 s~(-1)以及变形温度为1050～1200℃、应变速率为0.01～0.5 s~(-1)。

关键词(KeyWords)： 18Cr2Ni4W钢;热变形行为;本构方程;热变形组织;热加工图

Abstract:

Keywords:

基金项目(Foundation): 河北省自然科学基金绿色通道项目(E2021203074)

作者(Author): 蔡述巧,王勇帆,陈克鑫,纪宏志,谷大鹏,刘鑫刚

DOI: 10.13289/j.issn.1009-6264.2023-0469

参考文献(References)：

• [1] 郑医，何培刚，李宁，等.航空渗碳齿轮钢的迭代发展[J].航空材料学报，2023,43(1):60-69.ZHENG Yi,HE Pei-gang,LI Ning,et al.Material iterative development of aero carburizing gear steels[J].Journal of Aeronautical Materials,2023,43(1):60-69.
• [2] 王龙龙.18Cr2Ni4WA重载齿轮的热处理工艺研究[J].机械管理开发，2016,31(1):71-73.WANG Long-long.Research on heat treatment process of 18Cr2Ni4WA heavy duty gear[J].Mechanical Management Development,2016,31(1):71-73.
• [3] 范子靖，郭伦，王杰，等.18Cr2Ni4WA钢奥氏体形核和长大行为研究[J].热加工工艺，2023,52(16):150-153.FAN Zi-jing,GUO Lun,WANG Jie,et al.Research on nucleation and growth behavior of austenite of 18Cr2Ni4WA steel[J].Hot Working Technology,2023,52(16):150-153.
• [4] 汪正兵，朱百智，陈贺.风电齿轮热处理技术现状和趋势[J].金属热处理，2020,45(1):34-41.WANG Zheng-bing,ZHU Bai-zhi,CHEN He.Situation and trend of heat treatment technology in wind power[J].Heat Treatment of Metals,2020,45(1):34-41.
• [5] 王伟，马世博，张双杰，等.20Cr2Ni4A钢高温变形行为及物理基参数本构模型[J].塑性工程学报，2018,25(6):147-153.WANG Wei,MA Shi-bo,ZHANG Shuang-jie,et al.Elevated temperature deformation behavior and physically-based parameter constitutive model of 20Cr2Ni4A steel[J].Journal of Plasticity Engineering,2018,25(6):147-153.
• [6] Zhang L,Wang W,Shahzad B M,et al.Hot deformation behavior of an ultra-high-strength Fe-Ni-Co-based maraging steel[J].Acta Metallurgica Sinica (English Letters),2019,32(9):1161-1172.
• [7] 谢一夔，王启丞，陈子坤，等.18CrNiMo7-6齿轮钢的热变形行为及组织演变规律[J].金属热处理，2023,48(2):103-109.XIE Yi-kui,WANG Qi-cheng,CHEN Zi-kun,et al.Hot deformation behavior and microstructure evolution of 18CrNiMo7-6 gear steel[J].Heart Treatment of Metals,2023,48(2):103-109.
• [8] 董明振，闫永明，欧阳雪枚，等.17Cr2Ni2MoVNb和20Cr2Ni4A齿轮钢的动态再结晶行为及热加工图[J].金属热处理，2021,46(12):81-86.DONG Ming-zhen,YAN Yong-ming,OUYANG Xue-mei,et al.Thermal deformation behavior of 17Cr2Ni2MoVNb and 20Cr2Ni4A gear steels[J].Heat Treatment of Metals,2021,46(12):81-86.
• [9] 孙永伟，范芳雄，王灵水.12CrNi9MoV合金钢热变形本构方程及热加工图[J].塑性工程学报，2022,29(4):119-127.SUN Yong-wei,FAN Fang-xiong,WANG Ling-shui.Hot deformation constitutive equation and hot processing map of 12CrNi9MoV alloy steel.[J].Journal of Plasticity Engineering,2022,29(4):119-127.
• [10] Munir A S,Christopher H S,Fredrik S,et al.Hot deformation behaviour and processing map of cast alloy 825[J].Journal of Materials Engineering and Performance,2021,30:7770-7782.
• [11] Adam M B,Tucker D J,Tewksbury G.Comparative study of the hot processing behavior in advanced Ni-based superalloys for use in A-USC applications[J].Journal of Alloys and Compounds,2020,818:152907-152907.
• [12] Liu Y,Yang Z Q,Tian B H,et al.Hot deformation behavior of the 20vol.% TiC/Cu-Al2O3 composites[J].Journal of Materials Engineering and Performance,2018,27:4791-4798.
• [13] 张志阳，周孟，张毅，等.Cu-Ti-Ni-Mg合金的热变形行为及热加工图[J].材料热处理学报，2023,44(7):149-156.ZHANG Zhi-yang,ZHOU Meng,ZHANG Yi,et al.Hot deformation behavior and hot processing map of Cu-Ti-Ni-Mg alloy[J].Transactions of Materials and Heat Treatment,2023,44(7):149-156.
• [14] Lin Y C,Nong F,Chen X,et al.Microstructural evolution and constitutive models to predict hot deformation behaviors of a nickel-based superalloy[J].Vacuum,2017,137:104-114.
• [15] Lin Y C,Wu X Y,Chen X M,et al.EBSD study of a hot deformed nickel-based superalloy[J].Journal of Alloys and Compounds,2015,640:101-113.
• [16] Chen Z,Sun G A,Wu Y,et al.Multi-scale study of microstructure evolution in hot extruded nano-sized TiB2 particle reinforced aluminum composites[J].Materials and Design,2017,116:577-590.
• [17] Zhang C,Li X Q,Li D S,et al.Modelization and comparison of norton-hoff and arrhenius constitutive laws to predict hot tensile behavior of Ti-6Al-4V alloy[J].Transactions of Nonferrous Metals Society of China,2012,22(2):457-464.
• [18] 罗林丰.4130钢阀体多向模锻过程晶粒演化及数值模拟研究[D].秦皇岛：燕山大学，2021.LUO Lin-feng.Study on grain evolution and numerical simulation of 4130 steel valve body in multi-directional die forging process[D].Qinghuangdao:Yanshan University,2021.
• [19] 王林，王晓辉，刘振宝，等.00Cr12Ni11Mo1Ti2高强度不锈钢的热加工图与显微组织分析[J].材料热处理学报，2023,44(9):178-187.WANG Lin,WANG Xiao-hui,LIU Zhen-bao,et al.Hot processing map and corresponding microstructural analysis of 00Cr12Ni11Mo1Ti2 high-strength stainless steel[J].Transactions of Materials and Heat Treatment,2023,44(9):178-187.
• [20] Lin Y C,He D,Chen M,et al.EBSD analysis of evolution of dynamic recrystallization grains and δ phase in a nickel-based superalloy during hot compressive deformation[J].Materials and Design,2016,97:13-24.
• [21] Prasad Y V R K.Dynamic materials model:Basis and principles[J].Metallurgical and Materials Transactions A,1996,27(1):235-236.
• [22] Narayana Murty S V S,Nageaware R B.On the dynamic material model for the hot deformation of materials[J].Journal of Materials Science Letters,1999,18:1757-1758.
• [23] Wu H Y,Wu C T,Yang J C,et al.Hot workability analysis of AZ61 Mg alloys with processing maps[J].Materials Science and Engineering A,2014,607:261-268.
• [24] Zhang C,Zhang L,Shen W,et al.Study on constitutive modeling and processing maps for hot deformation of medium carbon Cr-Ni-Mo alloyed steel[J].Materials and Design,2016,90:804-814.
• [25] 朱耀庭，王瑜，孙璐，等.塑性与损伤不同耦合状态的热力学阐述[J].东南大学学报(自然科学版),2009,39(5):1065-1069.ZHU Yao-ting,WANG Yu,SUN Lu,et al.Thermodynamics formulation of different coupling conditions between damage and plasticity[J].Journal of Southeast University(Natural Science),2009,39(5):1065-1069.
• [26] 钟明君，王克鲁，鲁世强，等.TC20钛合金的变形热效应和局部流动行为[J].特种铸造及有色合金，2020,40(10):1156-1160.ZHONG Ming-jun,WANG Ke-lu,LU Shi-qiang,et al.Deformation heat effect and local flow behavior of TC20 titanium alloy[J].Special Casting & Nonferrous Alloys,2020,40(10):1156-1160.

文章评论(Comment)：