Effects of CeO2 Content, Boronizing Temperature and Time on Microstructureand Properties of H13 Steel Boronized Layer
摘 要
对H13钢表面进行渗硼处理,研究了稀土CeO2含量(0,2%,4%,6%,质量分数)、渗硼温度(850,900,950,1 000℃)及渗硼时间(2,3,4,5 h)对渗硼层组织和性能的影响。结果表明:随着渗硼温度的升高和时间的延长,渗硼层厚度先逐渐增大再趋于平缓;当CeO2含量在0~2%时,硼原子的扩散激活能变化不大,从2%增大到4%时显著降低,且渗硼层厚度增加较快,从4%增大到6%时,扩散激活能基本不变,渗硼层厚度增加较慢;在渗硼温度为950℃,渗硼时间为4 h,CeO2含量为4%条件下,渗硼层的孔洞最少,组织最致密,硬度最大,耐磨性最好。
Abstract
The surface of H13 steel was boronized, and the effect of the content of rare earth CeO2 (0, 2wt%, 4wt%, 6wt%), boronizing temperature (850, 900, 950, 1 000 ℃) and boronizing time (2, 3, 4, 5 h) on the microstructure and properties of the boronized layer were studied. The results show that the thickness of the boronized layer increased first and then tended to be stable with increasing boronizing temperature and time. When the content of CeO2 increased from 0 to 2wt%, the diffusion activation energy of boron atoms did not change much, and decreased obviously from 2wt% to 4wt%, and the thickness of the boronized layer increased faster. The content of CeO2 increased from 4wt% to 6wt%, the diffusion activation energy basically unchanged, the thickness of the boronized layer increased slower. The boronized layer with 4wt% CeO2 formed at 950 ℃ for 4 h had the least holes, the most dense microstructure, the highest hardness, and the best wear resistance.
中图分类号 TG161 DOI 10.11973/jxgccl202107005
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51175385);湖北省科技计划项目(2018AAA036)
收稿日期 2020/4/29
修改稿日期 2021/1/22
网络出版日期
作者单位点击查看
备注张炎威(1994-),男,湖北荆门人,硕士研究生
引用该论文: ZHANG Yanwei,ZHENG Quan,FAN Yu,MEI Shunqi,LYGDENOV Burial,GURYEV Alexey. Effects of CeO2 Content, Boronizing Temperature and Time on Microstructureand Properties of H13 Steel Boronized Layer[J]. Materials for mechancial engineering, 2021, 45(7): 22~26
张炎威,郑权,凡宇,梅顺齐,LYGDENOVBurial,GURYEVAlexey. CeO2含量、渗硼温度和时间对H13钢渗硼层组织和性能的影响[J]. 机械工程材料, 2021, 45(7): 22~26
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【3】潘晓华,朱祖昌.H13热作模具钢的化学成分及其改进和发展的研究[J].模具制造,2006,6(4):78-85. PAN X H, ZHU Z C. The study of the chemical composition and improvement and development for the H13 hot work die & mold steel[J].Die & Mould Manufacture, 2006, 6(4):78-85.
【4】安亚君,武越,马壮,等.20CrMo渗碳钢经渗硼和渗硼氮硫处理后的耐磨性能[J].机械工程材料,2017,41(4):89-93. AN Y J, WU Y, MA Z, et al. Wear resistance of 20CrMo carburized steel after boriding and sulfur nitrogen boriding treatment[J]. Materials for Mechanical Engineering, 2017, 41(4):89-93.
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【6】苏振国,杨永利,田旭,等.稀土元素对渗硼动力学的影响[J].吉林大学学报(工学版),2010,40(1):82-86. SU Z G, YANG Y L, TIAN X. Effect of rare earth element on boronization kinetics[J]. Journal of Jilin University(Engineering and Technology Edition), 2010, 40(1):82-86.
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【13】李金平,王建锋,王攀.不同渗硼处理工艺下H13钢的组织及抗熔损性能[J].机械工程材料,2020,44(增刊2):29-33. LI J P, WANG J F, WANG P. Microstructure and soldering resistance of H13 steel under different boriding processes[J]. Materials for Mechanical Engineering, 2020,44(S2):29-33.
【14】郑权,张炎威,王峥晖, 等. H13钢自保护膏剂稀土渗硼工艺优化[J].材料保护,2020,53(1):131-135. ZHENG Q, ZHANG Y W, WANG Z H, et al. Optimizationon rare earth self-protecting pasty boronizing process for H13 steel[J]. Materials Protection, 2020,53(1):131-135.
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【17】彭竹琴,李俊魁,卢金斌,等.稀土CeO2对AlCoCuFeMnNi高熵合金组织与性能的影响[J].材料工程,2018,46(8):91-97. PENG Z Q, LI J K, LU J B, et al. Effects of rare earth CeO2 on microstructure and properties of AlCoCuFeMnNi high-entropy alloys[J]. Journal of Materials Engineering, 2018, 46(8):91-97.
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