锻压技术

锻造加工对30CrNi2MoV钢在空冷回火下的组织与性能的影响

英文标题：Influence of forging on microstructures and properties of steel 30CrNi2MoV under air cooling and tempering

单位：江苏大学

分类号：TG142.1

出版年,卷(期):页码：2018,43(1):25-29

摘要：

采用拉伸实验、冲击实验、金相腐蚀实验、硬度测试等实验研究了在回火空冷条件下，锻造方式对30CrNi2MoV钢的组织与性能的影响。结果表明，经过2次镦拔锻造工艺，再经过1次镦粗或1次镦粗+1次拔长后，30CrNi2MoV钢的拉伸强度分别从1173.007 MPa提升到1215.5和1260.3 MPa；冲击韧性显著提高，分别从26.67 J提高到87.67和56 J；其硬度一定程度上有所增强，从393 HB分别增加到405.13和377.9 HB。锻件的强度提高来源于材料内部晶粒的细化和均匀性，并且研究发现，后续的锻造工艺对材料的强化效果要明显高于只经过2次镦拔锻造工艺的效果。

The influences of forging method on the microstructures and properties of steel 30CrNi2MoV under the conditions of tempering and air cooling were studied by tensile tes, impact test, metallographic corrosion test and hardness test. The results show that the tensile strength of steel 30CrNi2MoV is increased from 1173.007 MPa to 1215.5 MPa and 1260.3 MPa respectively by the forging process of two-time upsetting and stretching and then the forging process of one-time upsetting or one-time upsetting and one-time stretching, the impact toughness is significantly improved from 26.67 J to 87.67 J and 56 J respectively, and the hardness is strengthened to a certain extent which is increased from 393 HB to 405.13 HB and 377.9 HB respectively. The strength of forging comes from refinement and uniformity of grain inside the material, and the strengthening effect of latter forging processes is obviously higher than that of the forging process of two-time upsetting and stretching.

基金项目：

江苏省产学研前瞻联合研究项目（BY2014123-04）

作者简介：张晓宇(1991-)，男，硕士研究生，E-mail: Mrxiaoyu910928@163.com；通讯作者：许晓静（1967-），男，博士，教授，E-mail:xjxu67@126.com

参考文献：

[1]刘丽娟. 大锻件材料内部空洞型缺陷高温焊合过程的研究[D]. 上海：上海交通大学, 2010.

Liu L J. Study on the Bonding Process of Inner Void Defects in Heavy Forging at High Temperature[D]. Shanghai: Shanghai Jiao Tong University, 2010.

[2]任运来. 大型锻件内部缺陷修复条件和修复方法研究[D]. 秦皇岛：燕山大学，2003.

Ren Y L. Study on Condition and Method for Eliminating Defects in Large Forgings[D]. Qinhuangdao: Yanshan University, 2003.

[3]薛育强, 史颖, 李耀东,等. 30CrNi2MoVA钢的热处理工艺探讨[J]. 热加工工艺, 2011, 40(16):185-186.

Xue Y Q, Shi Y, Li Y D, et al. Study on heat treatment process of 30CrNi2MoVA steel[J]. Hot Working Technology, 2011, 40(16):185-186.

[4]戚龙, 顾林喻. 30CrNi2MoVA钢激光相变硬化技术[J]. 热加工工艺, 2007, 36(2):47-48.

Qi L, Gu L Y. Laser hardening technology for 30CrNi2MoVA steel[J]. Hot Working Technology, 2007, 36(2):47-48.

[5]王震. AZ80锻造镁合金车轮材料组织研究和性能提升[D]. 秦皇岛：燕山大学，2015.

Wang Z. Microstructure Research and Performance Improvement of AZ80 Magnesium Alloy Wheel[D]. Qinhuangdao: Yanshan University,2015.

[6]周鑫. 锻造比对锻件力学性能及微观组织影响的研究[D]. 济南：山东大学, 2014.

Zhou X. Research on the Influence of Forging Ratio to Mechanical Properties and Microstructure of Forgings[D]. Ji′nan: Shandong University, 2014.

[7]李长荣，张迁，王鹏. 锻造比对H13模具钢晶粒组织遗传规律的影响[J]. 锻压技术，2017，42（10）：9-12.

Li C R, Zhang Q, Wang P. Influence of forging ratio on heredity rules of grain structure for die steel H13[J]. Forging & Stamping Technology，2017，42（10）：9-12.

[8]蔡志鹏, 王梁, 潘际銮,等. 回火冷却速度对贝氏体焊缝韧性的影响[J]. 清华大学学报：自然科学版, 2015，55 (10): 1045-1050.

Cai Z P, Wang L, Pan J L, et al. Effect of the tempering cooling rate on the toughness of bainite welds[J]. Journal of Tsinghua University：Science and Technology, 2015,55(10):1045-1050.

[9]王宪军, 丁庆丰, 刘文斌. 正火后冷却速度对12Cr2Mo1VR钢板的力学性能及组织的影响[A]. 全国压力容器学术会议[C]. 合肥,2013.

Wang X J, Ding Q F, Liu W B. Effect of cooling speed after normalizing on mechanical properties and microstructures of 12Cr2Mo1VR plate[A]. National Symposium on Pressure Vessels[C]. Hefei, 2013.

[10]雷勇, 许晓嫦, 李良,等. 冷速及高温回火对低合金高强铸钢组织性能的影响[J]. 材料科学与工艺, 2014, 22(5): 6-12.

Lei Y, Xu X C, Li L, et al. Effect of cooling rate and high tempering on microstructure and mechanical properties of high-strength low-alloy(HSLA) cast steel[J]. Materials Science and Technology, 2014, 22(5):6-12.

[11]安红萍, 孟诗茹, 武建国,等. 镦粗过程中钢锭内夹杂分布对损伤演化的影响[J]. 塑性工程学报, 2016, 23(6):8-13.

An H P, Meng S R, Wu J G, et al. Effect of inclusion distribution on matrix damage evolution during ingot steel upsetting[J]. Journal of Plasticity Engineering, 2016, 23(6):8-13.

[12]GB/T 228.1—2010, 金属材料拉伸试验第1部分：室温试验方法[S].

GB/T 228.1—2010, Metallic materials—Tensile testing—Part 1: Method of test at room temperature [S]

[13]GB/T 229—2007，金属材料夏比摆锤冲击试验方法[S].

GB/T 229—2007，Metallic materials—Charpy pendulum impact test method [S].

[14]马越, 刘建生. 30Cr2Ni4MoV钢动态再结晶及微观组织演变研究[J]. 锻压技术, 2016, 41(3):129-133.

Ma Y, Liu J S . Research on dynamic recrystallization behavior and microstructure evolution of steel 30Cr2Ni4MoV [J]. Forging & Stamping Technology, 2016, 41(3):129-133.

[15]刘天佑.金属学与热处理[M]. 北京：冶金工业出版社，2009.

Liu T Y. Metallurgy and Heat Treatment[M]. Beijing: Metallurgical Industry Press, 2009.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】