التفاصيل البيبلوغرافية
| العنوان: |
Gradient Microstructure in a Gear Steel Produced by Pressurized Gas Nitriding |
| المؤلفون: |
Ran Yang, Guilin Wu, Xiaodan Zhang, Wantang Fu, Niels Hansen, Xiaoxu Huang |
| المصدر: |
Materials; Volume 12; Issue 22; Pages: 3797 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2019 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
gear steel, pressurized gas nitriding, microhardness, gradient microstructure |
| الوصف: |
A tempered martensitic gear steel (18CrNiMo7-6) sample was nitrided on two sides using a 5 atm pressurized gas at 530 °C for five hours. The nitrided sample was characterized by means of microhardness, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. A microhardness gradient was identified over a distance of 1000 µm with hardness values from 900 HV0.1 at the surface to 300 HV0.1 in the center matrix. The gradient microstructure was mainly divided into three zones: (i) a nitride compound layer at the top surface (~20 µm thick), (ii) a diffusion zone with containing precipitates (~350 µm thick), and (iii) the center matrix of the tempered martensite. Compared with carburized sample, the harder surface of the nitrided one ensures a better performance of the present pressured gas nitrided gears. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
https://dx.doi.org/10.3390/ma12223797 |
| DOI: |
10.3390/ma12223797 |
| الاتاحة: |
https://doi.org/10.3390/ma12223797 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.509DD4DD |
| قاعدة البيانات: |
BASE |