Study on Friction and Wear Behavior of Inconel 625 Superalloy during Hot Extrusion
Study on Friction and Wear Behavior of Inconel 625 Superalloy during Hot Extrusion
复制标题
Inconel 625高温合金热挤压摩擦磨损行为研究
DOI：
10.1155/2020/5453703
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发表时间：
2020-02
影响因子：
--
通讯作者：
Ding Yutian
中科院分区：
文献类型：
--
作者：
Wang Yanjiang;Zhao Sixiang;Jia Zhi;Ji Jinjin;Liu Dexue;Guo Tingbiao;Ding Yutian
Inconel625高温合金管材在热挤压过程中的摩擦对模具磨损严重，对制品质量起着决定性的作用。本文采用球盘法研究了Inconel625与GCr15和Si3N4两种不同摩擦副在室温和高温下的摩擦学行为。对摩擦系数、比磨损率和磨损表面形貌进行了系统的表征。结果表明，两种摩擦副的摩擦系数均随试验温度的升高而增大，而比磨损率随温度的升高先增大后减小。随着滑动速度的增加，Inconel625与Si3N4之间的摩擦系数单调减小，比磨损率先增大后减小。在任何给定的试验条件下，Inconel625/Si3N4摩擦副的摩擦系数和比磨损率均小于Inconel/GCr15副。在所有试验温度下，GCr15与Inconel625之间的主要磨损机制为粘着磨损和疲劳磨损。在室温下，Si3N4与Inconel625之间的磨损机制为粘着磨损和磨粒磨损，而在500°C时为疲劳磨损。研究结果表明，在Inconel625热挤压过程中使用陶瓷模具可以显著改善产品的表面质量，降低模具的磨损。
Friction during the hot extrusion of Inconel 625 superalloy tubes causes severe wear of the mold and plays a decisive role in the quality of the workpieces. In this paper, a ball-to-disk method was utilized to investigate the tribological behavior of Inconel 625 using two different tribological pairs, i.e., GCr15 and Si3N4, at room and elevated temperatures. Friction coefficient, specific wear rate, and morphology of worn surfaces were systematically characterized. It was found that the friction coefficients for both tribological pairs generally increased as the testing temperature increased, while the specific wear rate increased firstly and then decreased with the rise of temperature. Along with the increasing sliding speed, the friction coefficient between Inconel 625 and Si3N4 decreased monotonically, while the specific wear rate increased firstly and then decreased. Under any given testing condition, the friction coefficient and specific wear rate of the Inconel 625 for Inconel/Si3N4 pair are less than those of the Inconel/GCr15 pair. The main wear mechanisms between GCr15 and Inconel 625 are adhesive and fatigue wear at all testing temperatures. The wear mechanisms between Si3N4 and Inconel 625 are adhesive and abrasive wear at room temperature but fatigue wear at 500°C. Our findings indicate that the use of ceramic molds in the hot extrusion of Inconel 625 may significantly improve the surface qualities of the product and reduce the wear of the mold.
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DOI：
10.1023/a:1006613220953
发表时间：
1998-10
期刊：
Journal of Materials Science Letters
影响因子：
--
作者：
J. Duszczyk
通讯作者：
J. Duszczyk
影响因子：
5
作者：
A. Moshkovich;I. Lapsker;Y. Feldman;L. Rapoport
通讯作者：
A. Moshkovich;I. Lapsker;Y. Feldman;L. Rapoport
影响因子：
5
作者：
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通讯作者：
L. Wang;R. W. Snidle;L. Gu
影响因子：
5.4
作者：
E. Broszeit;B. Matthes;W. Herr;K. H. Kloos
通讯作者：
E. Broszeit;B. Matthes;W. Herr;K. H. Kloos
DOI：
10.1007/s11661-018-4539-x
发表时间：
2018-03
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
J. McCarley;B. Alabbad-;S. Tin
通讯作者：
J. McCarley;B. Alabbad-;S. Tin