袁兴栋,李子哲,方同辉,姜文韬,王学刚.喷丸处理辅助碳钢表面低温B–Cr–Re扩散[J].表面技术,2022,51(9):335-341, 350.
YUAN Xing-dong,LI Zi-zhe,FANG Tong-hui,JIANG Wen-tao,WANG Xue-gang.Shot Peening Assisted B-Cr-Re Diffusion on Carbon Steel at Low Temperature[J].Surface Technology,2022,51(9):335-341, 350
喷丸处理辅助碳钢表面低温B–Cr–Re扩散
Shot Peening Assisted B-Cr-Re Diffusion on Carbon Steel at Low Temperature
  
DOI:10.16490/j.cnki.issn.1001-3660.2022.09.035
中文关键词:  喷丸处理  B–Cr–Re共渗  低温  纳米结构  位错
英文关键词:shot peening  B-Cr-Re co-infiltration  low temperature  nanostructure  dislocation
基金项目:山东省高等学校科技计划(J17KA017);山东省社会科学规划研究项目(19CHYJ12)
作者单位
袁兴栋 山东建筑大学 材料科学与工程学院,济南 250101 
李子哲 山东建筑大学 材料科学与工程学院,济南 250101 
方同辉 山东建筑大学 材料科学与工程学院,济南 250101 
姜文韬 山东建筑大学 材料科学与工程学院,济南 250101 
王学刚 山东建筑大学 材料科学与工程学院,济南 250101 
AuthorInstitution
YUAN Xing-dong School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China 
LI Zi-zhe School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China 
FANG Tong-hui School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China 
JIANG Wen-tao School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China 
WANG Xue-gang School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China 
摘要点击次数:
全文下载次数:
中文摘要:
      目的 提高碳钢表面B原子低温扩散行为,拓宽低温B–Cr–Re三元共渗技术的应用范围。方法 以退火态45钢为基体,表面经合金钢砂喷丸处理后进行B–Cr–Re低温共渗,获得一定深度的共渗层,喷丸处理时间分别为0.5、1.0、1.5 h,在580 ℃下保温6 h。利用透射电子显微镜(TEM)、热场发射扫描电子显微镜(TFESEM)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)等检测仪器,分别研究经喷丸处理后基体表层的微观组织结构、B–Cr–Re共渗层的组织结构及力学性能。结果 实验结果表明,经喷丸处理后45钢基体表层组织处于塑性不稳定状态,表层产生了位错、非晶区和孪晶等结构缺陷,表层获得了纳米结构层;随着喷丸处理时间的延长,基体表层晶粒逐渐破碎细化,平均晶粒尺寸分别为180、70、20 nm;对喷丸处理后的基体进行低温共渗,在其表层获得了均匀、连续、致密的B–Cr–Re共渗层,且呈树枝状,平均深度分别为20、22、23 µm,较未喷丸处理基体表层获得的共渗层平均深度(13 µm)提高了约54%、69%、77%;B–Cr–Re共渗层结构为FeB相和Fe2B相,以Fe2B相为主,共渗层的力学性能良好,显微硬度为875HV~2 042HV。结论 碳钢经喷丸处理后,表层晶粒细化,晶界位错明显增多。晶界位错等对后续原子的扩散起着快速通道的作用,提供能量,提高B原子扩散速度,降低B–Cr–Re共渗温度。这种表面处理技术为碳钢表面的强化提供了更好的方法。
英文摘要:
      The work aims to improve the diffusion behavior of B atom on the carbon steel surface at low temperature, and broaden the application of low-temperature B-Cr-Re co-infiltration technology. The annealed 45 steel was used as the substrate, and the surface was treated with emery shot peening, then the B-Cr-Re co-infiltration was carried out at low temperature to obtain a certain depth of co-infiltration layer. The shot peening time was 0.5, 1.0 and 1.5 h respectively, and the low-temperature co-infiltration process was kept at 580 ℃ for 6 h. TEM, TFESEM, SEM and XRD were used to study the microstructure of the substrate surface layer after shot peening and the microstructure and mechanical properties of B-Cr-Re co-infiltration layer. According to the experimental results, after shot peening, the surface microstructure of 45 steel substrate was in a plastic unstable state, and structural defects such as dislocations, amorphous regions and twin structures appeared in the surface layer, and nano-structured layers were obtained in the surface layer. With the extension of shot peening time, the surface grains of the substrate gradually broke and refined, and the average grain size was 180, 70 and 20 nm, respectively. After shot peening, a uniform, continuous and dense B-Cr-Re layer was obtained on the surface of the shot peening substrate at low-temperature co-infiltration, which was in the shape of branch, with an average depth of 20, 22 and 23 µm, respectively, about 54%, 69% and 77% higher than that of untreated substrate (average depth was 13 µm). The structure of B-Cr-Re co-infiltration layer was FeB phase and Fe2B phase, with Fe2B phase as the main component. The mechanical properties of the co-infiltration layer were superior, and the microhardness was 875HV~2 042HV. After shot peening, the surface grain of carbon steel is refined, the grain boundary and dislocations increases obviously. The grain boundary and dislocations plays a fast channel role in the diffusion of subsequent atoms, providing energy, increasing the diffusion rate of B atoms and lowering the B-Cr-Re infiltration temperature. This surface treatment technology provides a better method for strengthening the surface of carbon steel.
查看全文  查看/发表评论  下载PDF阅读器
关闭

关于我们 | 联系我们 | 投诉建议 | 隐私保护 | 用户协议

您是第19505313位访问者    渝ICP备15012534号-3

版权所有:《表面技术》编辑部 2014 surface-techj.com, All Rights Reserved

邮编:400039 电话:023-68792193传真:023-68792396 Email: bmjs@surface-techj.com

渝公网安备 50010702501715号