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使用响应面法对 TC21 钛合金耐磨性进行建模。

Modeling of wear resistance for TC21 Ti-alloy using response surface methodology.

机构信息

Faculty of Engineering, Helwan University, Cairo, Egypt.

Tabbin Institute for Metallurgical Studies, Cairo, Egypt.

出版信息

Sci Rep. 2023 Mar 21;13(1):4624. doi: 10.1038/s41598-023-31699-1.

DOI:10.1038/s41598-023-31699-1
PMID:36944750
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10030582/
Abstract

This study investigated the effect of heat treatment processes on the dry sliding wear resistance of the TC21 Ti-alloy at several levels of normal load and sliding speed. Response Surface Methodology (RSM) has been used as a design of the experiment procedure. OM and FESEM besides XRD analysis were used for results justification. Highest hardness of 49 HRC was recorded for WQ + Aging specimens due to the plenty of α″ which decomposed to α and the more α, while the lowest hardness of 36 HRC was reported for WQ specimens. The results revealed that specimens subjected to water quenching and aging (WQ + Aging) under extreme load and speed conditions (50 N and 3 m/s), possessed the poorest wear resistance although they had the highest hardness. While those left in the annealed condition revealed the highest wear resistance although they had much lower hardness when compared to other conditions. A mathematical polynomial model for wear resistance expressed in wear rate was developed, validated then used to get the optimum parameters.

摘要

本研究探讨了不同法向载荷和滑动速度下热处理工艺对 TC21 钛合金干滑动磨损性能的影响。响应面法（RSM）被用作实验设计程序。使用 OM 和 FESEM 以及 XRD 分析来验证结果。由于大量的 α″分解为 α 和更多的 α，因此 WQ+时效试样的硬度最高，达到 49 HRC；而 WQ 试样的硬度最低，为 36 HRC。结果表明，在极端载荷和速度条件（50 N 和 3 m/s）下进行水淬火和时效（WQ+时效）的试样具有最差的耐磨性，尽管它们具有最高的硬度。相比之下，处于退火状态的试样具有最高的耐磨性，尽管与其他条件相比，它们的硬度要低得多。开发了一个以磨损率表示的耐磨性的数学多项式模型，对其进行了验证，然后用于获得最佳参数。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bc6/10030582/f4b8c2690ae8/41598_2023_31699_Fig8_HTML.jpg
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