陈勇,周桂峰,刘静,黄峰

• 1:武汉科技大学材料与冶金学院
• 2:宝武中央研究院武汉分院(武钢有限技术中心)

摘要(Abstract)：

采用恒载荷和慢速率拉伸(SSRT)方法研究了薄板坯连铸连轧(CSP)和传统冷轧两种不同工艺生产的1500 MPa级热成形钢的氢致延迟开裂(HIDC)行为,采用氢渗透方法测量了两种钢的扩散动力学参数,采用扫描电镜和透射电镜分别观察了两种钢的断口形貌和析出相形貌。结果表明:CSP工艺生产的热成形钢具有较高的门槛应力值和较低的氢脆敏感性;CSP钢具有较低的氢扩散系数和较高的氢陷阱密度;在0.5 mA/cm~2充氢条件下两种钢的断裂机制均表现为沿晶+准解理混合特征;CSP钢中的析出相更为细小和弥散。从两种热成形钢的生产工艺流程出发,分析和讨论了CSP钢中析出相细小弥散的的产生原因以及对氢扩散动力学的影响以及对延迟开裂行为的影响。

关键词(KeyWords)： 薄板坯连铸连轧(CSP);热成形;氢致延迟开裂;氢渗透;析出相

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 陈勇,周桂峰,刘静,黄峰

DOI: 10.13289/j.issn.1009-6264.2019-0236

参考文献(References)：

• [1] 马鸣图,张宜生,宋磊峰,等.超高强度钢热冲压成形研究进展(上)[J].先进材料工业,2015(9):61-67.MA Ming-tu,ZHANG Yi-sheng,SONG Lei-feng,et al.Research progress on hot stamping of ultra-high strength steel (up)[J].Advantage Materials Industry,2015(9):61-67.
• [2] 马鸣图,张宜生,宋磊峰,等.超高强度钢热冲压成形研究进展(下)[J].先进材料工业,2015(10):65-69.MA Ming-tu,ZHANG Yi-sheng,SONG Lei-feng,et al.Research progress on hot stamping of ultra-high strength steel (down)[J].Advantage Materials Industry,2015(10):65-69.
• [3] 马鸣图.先进汽车用钢[M].北京:化学工业出版社,2007.
• [4] Zhang S Q,Huang Y H,Sun B T,et al.Effect of Nb on hydrogen-induced delayed fracture in high strength hot stamping steels[J].Materials Science and Engineering A,2015,626:136-143.
• [5] 张施琦,黄运华,廖庆亮,等.超高强度热冲压用钢中H 的扩散与氢致滞后开裂行为[J].钢铁研究学报,2014(26)8:47-52.ZHANG Shi-qi,HUANG Yun-hua,LIAO Qing-liang,et al.Hydrogen diffusion and hydrogen-induced delayed cracking of ultra-high strength steels for hot stamping[J].Journal of Iron and Steel Research,2014,26(8):47-52.
• [6] 程亚杰,孙斌堂,廖庆亮,等.开轧温度对铌微合金化热成型钢氢致延迟开裂性能的影响[J].工程科学学报,2016,38(10):1423-1428.CHENG Ya-jie,SUN Bin-tang,LIAO Qing-liang,et al.Effect of initial rolling temperature on the hydrogen-induced delayed fracture of Nb alloyed hot stamping steel[J].Chinese Journal of Engineering,2016,38(10):1423-1428.
• [7] 晋家春,谷海容,曹煜,等.热成形钢抗氢脆性能研究[C]//中国汽车EVI及高强度钢氢致延迟断裂研究,北京,2018,1:211-218.JIN Jia-chun,GU Hai-rong,CAO Yu,et al.Research on hydrogen embrittlement property of PHS[C]//China Automotive EVI and Hydrogen Induced Delayed Cracking,Beijing,2018,1:211-218.
• [8] 范光龙,顾有松,廖庆亮,等.Ti和Mo对22MnB5Nb氢致滞后开裂性能的影响[J].中国汽车EVI及高强度钢氢致延迟断裂研究,2018(1):273-284.FAN Guang-long,GU You-song,LIAO Qing-liang,et al.Effect of optimization of Nb precipitation phase on hydrogen induced delayed fracture of 22MnB5Nb steel[J].China Automotive EVI and Hydrogen Induced Delayed Cracking,2018(1):273-284.
• [9] 熊良银,刘实,王隆保,等.Nb-Ti-Ni合金的显微组织与氢渗透性能[J].金属学报,2008,44(7):781-785.XIONG Liang-yin,LIU Shi,WANG Long-bao et al.Microstructures and hydrogen permeation characteristics of Nb-Ti-Ni alloys[J].Acta Metallurgica Sinica,2008,44(7):781-785.
• [10] 谢春乾,李金许,李倩,等.析出相对马氏体时效钢氢扩散系数的影响[J].材料热处理学报,2014,35(11):33-39.XIE Chun-qian,LI Jin-xu,LI Qian,et al.Effect of precipitate on hydrogen diffusion coefficient of TM210 maraging steel[J] Transactions of Materials and Heat Treatment,2014,35(11):33-39.
• [11] 徐春,饶德怀.析出相对超低碳钒钛微合金钢氢渗透及抗鳞爆性的影响[J].玻璃与搪瓷,2016,44(1):20-26XU Chun,RAO De-huai.The effect of precipitation on penetration of hydrogen to ultra-low carbon vanadium titanium alloyed steel and fishscale resistance[J].Glass and Enamel,2016,44(1):20-26.
• [12] 边剑,路洪州,王文军,等.铌微合金化对热冲压成形钢氢致延迟断裂的影响[C]//中国汽车EVI及高强度钢氢致延迟断裂研究,北京,2018(1):227-239.BIAN Jian,LU Hong-zhou,WANG Wen-jun,et al.Impact of Nb microalloying on the hydrogen embrittlement of press hardening steel[C]//China Automotive EVI and Hydrogen Induced Delayed Cracking,Beijing,2018(1):227-239.
• [13] 康永林.薄板坯连铸连轧低成本高性能微合金化钢的研发进展[J].中国材料进展,2009,28 (15):52-59.KANG Yong-lin.Recent progress of low-cost and high-performance micro-alloyed steels produced with thin slab casting and rolling[J].Materials China,2009,28 (15):52-59.
• [14] 廖建云.对薄板坯连铸连轧技术的客观分析[J].炼钢,2009,5(10):66-69.LIAO Jian-yun.Objective analysis on thin slab continuous casting and rolling technology[J].Steelmaking,2009,5(10):66-69.
• [15] 陈麒琳,毛新平,孙新军.TSCR流程 Ti 微合金化超高强钢的第二相析出行为研究[J].热加工工艺,2016,45(23):32-35.CHEN Qi-lin,MAO Xin-ping,SUN Xin-jun,et al.Study on second phase precipitation behavior of Ti microalloyed ultra-high strength steel during TSCR process[J].Hot Working Technology,2016,45(23):32-35.
• [16] 柏明卓,柳得橹,娄艳芝,等.CSP低碳微Ti钢中Ti(C,N)的析出行为[J].北京科技大学学报,2005,27(6):679-683.BO Ming-zhuo,LIU De-lu,LOU Yan-zhi,et al.Precipitation behavior of Ti(C,N) in CSP low carbon steel with small amount of Ti addition[J].Journal University Science and Technology Beijing,2005,27(6):679-683.
• [17] 娄艳芝,柳得橹,毛新平,等.CSP工艺钛微合金钢中的碳氮化钛析出相[J].钢铁,2010,45(2):70-77.LOU Yan-zhi,LIU De-lu,MAO Xin-ping,et al.Titanium carbonitrides in Ti-microalloyed steels produced by CSP process[J].Iron and Steel,2010,45:70-77.
• [18] 张超.CSP薄板坯连铸连轧钢热变形规律及其强化机理[D].武汉:武汉科技大学,2012.ZHANG Chao.Hot deformation law and strengthening mechanism of CSP thin slab continuous casting and rolling steel[D].Wuhan:Wuhan University of Science and Jechnology,2012.
• [19] 毛新平等著,薄板坯连铸连轧微合金化技术[M].北京:冶金工业出版社,2008.
• [20] 毛新平,霍向东,康永林,等.TSCR流程生产钛微合金化高强耐候钢中的析出物[J].北京科技大学学报,2006,28(11):1023-1028.MAO Xin-ping,HUO Xiang-dong,KANG Yong-lin,et al.Precipitates of Ti-microalloyed high-strength weather-resisting steel produced by TSCR process[J].Journal of University of Science and Technology Beijing,2006,28(11):1023-1028.
• [21] 王建锋.CSP流程钛微合金化高强钢的开发及强化机理研究[D].武汉:武汉科技大学,2011.WANG Jian-feng.The development and strengthening mechanism of titanium microalloyed high strength steel produced by CSP process[D].Wuhan:Wuhan University of Science and Technology,2011.
• [22] Dong C F,Liu Z Y,Li X G,et al.Effects of hydrogen-charging on the susceptibility of X100 pipeline steel to hydrogen-induced cracking[J].International Journal of Hydrogen Energy,2009,34:9879-9884.
• [23] 雍歧龙.钢铁材料中的第二相[M].北京:冶金工业出版社,2006.
• [24] 毛新平,孙新军,康永林,等.薄板坯连铸连轧Ti微合金化钢的物理冶金学特征[J].金属学报,2006,12(10):1091-1095.MAO Xin-ping,SUN Xin-jun,KANG Yong-lin,et al.Physical metallurgy for the titanium microalloyed strip produced by thin slab casting and rolling process[J].Acta Metallurgica Sinica,2006,12(10):1091-1095.
• [25] Motomichi K,C C T,Eiji Akiyama,et al.Hydrogen-assisted decohesion and localized plasticity in dual-phase steel[J].Acta Materialia,2014,70:174-187.
• [26] Jeffrey V,Zhou Q J,Liu Q L,et al.Influence of hydrogen on the mechanical and fracture properties of some martensitic advanced high strength steels in simulated service conditions[J].Corrosion Science,2016,111:602-624.
• [27] Liu Q L,Zhou Q J,Jeffrey V,et al.A review of the influence of hydrogen on the mechanical properties of DP,TRIP,and TWIP advanced high-strength steels for auto construction[J].Corrosion Review,2016,34(3):127-152.
• [28] 褚武扬,乔利杰,李金许,等.氢脆和应力腐蚀[M].北京:科学出版社,2013.
• [29] Harshad K,Dharamshi H,Bhade S,et al.Prevention of Hydrogen Embrittlement in Steels[C].ISIJ International,2016,56(1):24-36.
• [30] Jeffrey V,Liu Q L,Zhang M X,et al.A review of hydrogen embitterment of martensitic advanced high-strength steels[J].Corrosion Review,2016,34(3):153-186.
• [31] Depovern T,Wallaert E,Verbeken K,et al.Fractographic analysis of the role of hydrogen diffusion on the hydrogen embrittlement susceptibility of DP steel[J].Materials Science and Engineering A,2016,649:201-208.

文章评论(Comment)：