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首页> 外文期刊>Journal of Materials Engineering and Performance >Water Droplet Erosion Behavior of High-Power Diode Laser Treated 17Cr4Ni PH Stainless Steel
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Water Droplet Erosion Behavior of High-Power Diode Laser Treated 17Cr4Ni PH Stainless Steel

机译：大功率二极管激光处理的17Cr4Ni PH不锈钢的水滴冲蚀行为

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摘要

This article deals with water droplet erosion (WDE) behavior of high-power diode laser (HPDL) treated 17Cr4Ni PH stainless steel. After HPDL treatment, the water droplet erosion resistance (WDER) of 17Cr4Ni PH stainless steel has not improved. The main reason is the surface hardness, which has not improved after HPDL treatment though the microstructure has become much finer. On the other hand, precipitation hardening of the alloy at 490℃ for 3 h has resulted in improved WDER more than twice. This is because of its increased microhardness and improved modified ultimate resilience (MUR), and formation of fine grained microstructure. The WDER has been correlated with MUR, a single mechanical property, based upon microhardness, ultimate tensile strength, and Young's modulus. WDERs of HPDL treated, untreated, and precipitation hardened 17Cr4Ni PH stainless steel samples were determined using a WDE test facility as per ASTM G73-1978. The WDE damage mechanism, compared on the basis of MUR and scanning electron micrographs, is discussed and reported in this article.
机译：本文讨论了高功率二极管激光器（HPDL）处理的17Cr4Ni PH不锈钢的水滴腐蚀（WDE）行为。经过HPDL处理后，17Cr4Ni PH不锈钢的抗水滴侵蚀性（WDER）并未提高。主要原因是表面硬度，尽管显微组织变得更细，但在HPDL处理后表面硬度并未提高。另一方面，合金在490℃下3小时的沉淀硬化导致WDER改善了两倍以上。这是因为其增加了显微硬度，改善了改性的极限弹性（MUR），并形成了细晶粒的微观结构。基于显微硬度，极限拉伸强度和杨氏模量，WDER已与MUR（一种单一的机械性能）相关联。使用ASTM G73-1978中的WDE测试设备确定经过HPDL处理，未经处理和沉淀硬化的17Cr4Ni PH不锈钢样品的WDER。本文讨论并报道了基于MUR和扫描电子显微照片比较的WDE损伤机理。

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