长期时效对<strong>20Cr1Mo1VTiB</strong>螺栓钢的组织和力学性能的影响

doi:10.11901/1005.3093.2019.361

材料研究学报

2020, Vol. 34

Issue (5): 321-327 DOI: 10.11901/1005.3093.2019.361

研究论文

本期目录 | 过刊浏览

长期时效对20Cr1Mo1VTiB螺栓钢的组织和力学性能的影响

赵孟雅¹, 彭涛¹, 赵吉庆², 杨钢², 杨滨¹(

)

1.北京科技大学钢铁共性技术协同创新中心北京 100083
2.钢铁研究总院特殊钢研究所北京 100081

Effect of Long-term Aging on Microstructure and Mechanical Properties of 20Cr1Mo1VTiB Bolt Steel

ZHAO Mengya¹, PENG Tao¹, ZHAO Jiqing², YANG Gang², YANG Bin¹(

)

1.Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China
2.Institute for Special Steels, Central Iron & Steel Research Institute, Beijing 100081, China

引用本文:

赵孟雅, 彭涛, 赵吉庆, 杨钢, 杨滨. 长期时效对20Cr1Mo1VTiB螺栓钢的组织和力学性能的影响[J]. 材料研究学报, 2020, 34(5): 321-327.
Mengya ZHAO, Tao PENG, Jiqing ZHAO, Gang YANG, Bin YANG. Effect of Long-term Aging on Microstructure and Mechanical Properties of 20Cr1Mo1VTiB Bolt Steel[J]. Chinese Journal of Materials Research, 2020, 34(5): 321-327.

全文: PDF(11615 KB) HTML

摘要:

对20Cr1Mo1VTiB螺栓钢进行拉伸和冲击实验、TEM和SEM观测并测量其XRD谱，研究了其在500℃进行0~2000 h时效处理后的组织和力学性能。结果表明：随着时效时间的增加原板条状贝氏体分成若干个包体，其平均尺寸由时效前的14 μm减小到时效2000 h后的9 μm。在0~2000 h时效过程中碳化物尺寸没有明显增大，主要析出相VC和TiC弥散分布在晶内、板条界和板条内。VC相呈椭球状，随时效时间的延长TiC相由长条状变为方形。随着时效时间的延长贝氏体板条的边界逐渐模糊，时效2000 h后板条的宽度明显增加。在长时间时效过程中20Cr1Mo1VTiB螺栓钢的力学性能没有大幅度的变化而保持着较高的值，表明其可在高温下长期使用。

关键词 ：金属材料, 弥散强化, 长期时效, 力学性能

Abstract：

The 20Cr1Mo1VTiB bolt steel was aged at 500℃ for 0~2000 h and then the effect of long-term aging on microstructure and mechanical properties were investigated by means of TEM, SEM, XRD, tensile- and impact-tester. Results show that the lath bainite in the steel was divided into several packets during the aging process. The size of the bainite package in the steel decreased from 13 μm before aging to 9 μm after aged for 2000 h. The main precipitates VC and TiC in the steel dispersed in the intragranular, lath boundaries and inside lath bainite after the aging process. TiC changed from a long strip to a square shape with an extension of the aging time. The boundary of bainite slabs gradually blurred with the increase of aging time, and the width of lath increased obviously after 2000 h aging. After aging for 2000 h the 20Cr1Mo1VTiB bolt steel still has high strength and toughness, therefore, which is suitable for long term service at high temperature.

Key words： metallic materials diffusion strengthening long-term aging tensile property

收稿日期: 2019-07-19

ZTFLH:

TG142.1

基金资助:国家高技术研究发展计划(2016YFB0300203)

作者简介: 赵孟雅，女，1994年生，硕士生

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	赵孟雅
	彭涛
	赵吉庆
	杨钢
	杨滨
44.8K

链接本文:

https://www.cjmr.org/CN/10.11901/1005.3093.2019.361 或 https://www.cjmr.org/CN/Y2020/V34/I5/321

表1 20Cr1Mo1VTiB螺栓钢的化学成分(%，质量分数)

图1 20Cr1Mo1VTiB螺栓钢热处理后的组织

图2 时效时间对20Cr1Mo1VTiB螺栓钢显微组织的影响

图3 时效不同时间后20Cr1Mo1VTiB螺栓钢中板条贝氏体的形貌

图4 时效不同时间后20Cr1Mo1VTiB螺栓钢中的析出相及其含量与时效时间的关系

图5 20Cr1Mo1VTiB螺栓钢时效2000 h析出相的形貌和能谱

图6 20Cr1Mo1VTiB螺栓钢的平衡相图

图7 时效不同时间后20Cr1Mo1VTiB螺栓钢中析出相的TEM照片

图8 时效时间对20Cr1Mo1VTiB螺栓钢力学性能的影响

表2 20Cr1Mo1VTiB螺栓钢力学性能的执行标准

[1]	Wang X, Li Y, Li H, et al. Effect of long-term aging on the microstructure and mechanical properties of T23 steel weld metal without post-weld heat treatment [J]. J. Mater. Process. Tech. 2018, 252: 618
[2]	Gong X T, Wu Z G, Li X, et al. Effect of heat treatment process on microstructure and properties of 20Cr1Mo1VTiB bolt steel [J]. Iron Steel., 2018, 53(12): 105
[2]	(龚雪婷，武志广，李鑫等. 热处理工艺对20Cr1Mo1VTiB螺栓钢组织及性能的影响 [J]. 钢铁. 2018, 53(12): 105)
[3]	Zieliński A, Golański G, Sroka M. Influence of long-term ageing on the microstructure and mechanical properties of T24 steel [J]. Mater. Sci. Eng. A., 2017, 682: 664
[4]	Zieliński A, Golański G, Sroka M, et al. Influence of long-term service on microstructure, mechanical properties, and service life of HCM12A steel [J]. Mater. High Temp. 2016, 33(1): 24
[5]	Guo X F, Jia X K, Gong J M, et al. Effect of long-term aging on microstructural stabilization and mechanical properties of 20Cr32-Ni1Nb steel [J]. Mater. Sci. Eng. A.,2017, 690: 62
[6]	Chen C Y, Yen H W, Kao F H, et al. Precipitation hardening of high-strength low-alloy steels by nanometer-sized carbides [J]. Mater. Sci. Eng. A, 2009, 499(1-2): 162
[7]	Huang S, He Y W, Xu G H, et al. Effects of vanadium on microstructure and mechanical properties of a wrought nickel-based superalloy [J]. Chinese Journal Material Research, 2019, 33(6): 419
[7]	(黄烁，贺玉伟，胥国华等. V元素对铁镍基变形高温合金GH4061组织和性能的影响 [J]. 材料研究学报, 2019, 33(6): 419)
[8]	Ni Z F, Xue F. High temperature creep characteristics of in-situ micro-/nano-meter TiC dispersion strengthened 304 stainless steel [J]. Chinese Journal of Materials Research, 2019, 33(4): 306
[8]	(倪自飞，薛烽. 原位微米/纳米TiC颗粒弥散强化304不锈钢的高温蠕变特性 [J]. 材料研究学报, 2019, 33(4): 306)
[9]	Feng J W, Niu M C, Wang W, et al. Relationship between mechanical behavior and microstructure for an ultra-high strength maraging steel [J]. Chinese Journal of Materials Research, 2019, 33(9): 641
[9]	(冯家伟，牛梦超，王威等. 超高强度马氏体时效钢的力学行为与微观组织演化的关系 [J]. 材料研究学报, 2019, 33(9): 641)
[10]	Zhang C, Wang Q, Ren J, et al. Effect of microstructure on the strength of 25CrMo48V martensitic steel tempered at different temperature and time [J]. Materials & Design (1980-2015. 2012, 36: 220
[11]	Zhu M, Wang D, Xuan F. Effect of long-term aging on microstructure and local behavior in the heat-affected zone of a Ni-Cr-Mo-V steel welded joint [J]. Mater. Charact. 2014, 87: 45
[12]	Wei F G, Tsuzaki K. Quantitative analysis on hydrogen trapping of TiC particles in steel [J]. Metall. Mater. Trans. A., 2006, 37(2): 331
[13]	Jang J H, Lee C, Heo Y, et al. Stability of (Ti, M)C (M=Nb, V, Mo and W) carbide in steels using first-principles calculations [J]. Acta Mater. 2012, 60(1): 208
[14]	Han Y, Shi J, Xu L, et al. TiC precipitation induced effect on microstructure and mechanical properties in low carbon medium manganese steel [J]. Mater. Sci. Eng. A., 2011, 530: 643
[15]	Jang J H, Lee C, Han H N, et al. Modelling coarsening behaviour of TiC precipitates in high strength, low alloy steels [J]. Mater. Sci. Tech.-Lond. 2013, 29(9): 1074 doi: 10.1179/1743284713Y.0000000254
[16]	Tsai S, Jen C, Yen H, et al. Effects of interphase TiC precipitates on tensile properties and dislocation structures in a dual phase steel [J]. Mater. Charact. 2017, 123: 153
[17]	Wang X P, Zhao A m, Zhao Z Z, et al. Interphase precipitation strengthening in Ti-Mo low carbon ultra-high strength steel [J]. J. Eng. Sci., 2014, (9): 1183
[17]	(汪小培，赵爱民，赵征志等. Ti-Mo低碳超高强钢中相间析出强化 [J]. 工程科学学报, 2014, (9): 1183)

[1]	毛建军, 富童, 潘虎成, 滕常青, 张伟, 谢东升, 吴璐. AlNbMoZrB系难熔高熵合金的Kr离子辐照损伤行为[J]. 材料研究学报, 2023, 37(9): 641-648.
[2]	宋莉芳, 闫佳豪, 张佃康, 薛程, 夏慧芸, 牛艳辉. 碱金属掺杂MIL125的CO₂ 吸附性能[J]. 材料研究学报, 2023, 37(9): 649-654.
[3]	赵政翔, 廖露海, 徐芳泓, 张威, 李静媛. 超级奥氏体不锈钢24Cr-22Ni-7Mo-0.4N的热变形行为及其组织演变[J]. 材料研究学报, 2023, 37(9): 655-667.
[4]	邵鸿媚, 崔勇, 徐文迪, 张伟, 申晓毅, 翟玉春. 空心球形AlOOH的无模板水热制备和吸附性能[J]. 材料研究学报, 2023, 37(9): 675-684.
[5]	幸定琴, 涂坚, 罗森, 周志明. C含量对VCoNi中熵合金微观组织和性能的影响[J]. 材料研究学报, 2023, 37(9): 685-696.
[6]	欧阳康昕, 周达, 杨宇帆, 张磊. 含LPSO相Mg-Y-Er-Ni合金的组织和拉伸性能[J]. 材料研究学报, 2023, 37(9): 697-705.
[7]	潘新元, 蒋津, 任云飞, 刘莉, 李景辉, 张明亚. 热挤压钛/钢复合管的微观组织和性能[J]. 材料研究学报, 2023, 37(9): 713-720.
[8]	徐利君, 郑策, 冯小辉, 黄秋燕, 李应举, 杨院生. 定向再结晶对热轧态Cu71Al18Mn11合金的组织和超弹性性能的影响[J]. 材料研究学报, 2023, 37(8): 571-580.
[9]	熊诗琪, 刘恩泽, 谭政, 宁礼奎, 佟健, 郑志, 李海英. 固溶处理对一种低偏析高温合金组织的影响[J]. 材料研究学报, 2023, 37(8): 603-613.
[10]	刘继浩, 迟宏宵, 武会宾, 马党参, 周健, 徐辉霞. 喷射成形M3高速钢热处理过程中组织的演变和硬度偏低问题[J]. 材料研究学报, 2023, 37(8): 625-632.
[11]	陈晶晶, 占慧敏, 吴昊, 朱乔粼, 周丹, 李柯. 纳米晶CoNiCrFeMn高熵合金的拉伸力学性能[J]. 材料研究学报, 2023, 37(8): 614-624.
[12]	由宝栋, 朱明伟, 杨鹏举, 何杰. 合金相分离制备多孔金属材料的研究进展[J]. 材料研究学报, 2023, 37(8): 561-570.
[13]	任富彦, 欧阳二明. g-C₃N₄ 改性Bi₂O₃ 对盐酸四环素的光催化降解[J]. 材料研究学报, 2023, 37(8): 633-640.
[14]	王昊, 崔君军, 赵明久. 镍基高温合金GH3536带箔材的再结晶与晶粒长大行为[J]. 材料研究学报, 2023, 37(7): 535-542.
[15]	刘明珠, 樊娆, 张萧宇, 马泽元, 梁城洋, 曹颖, 耿仕通, 李玲. SnO₂ 作散射层的光阳极膜厚对量子点染料敏化太阳能电池光电性能的影响[J]. 材料研究学报, 2023, 37(7): 554-560.

Viewed

Full text

Abstract

Cited

Shared

Discussed