The Effects of Aging Process After Solution Heat Treatment on Drilling Machinability of Corrax Steel

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Experimental Techniques Pub Date : 2023-06-01 DOI:10.1007/s40799-023-00656-y

A.S. Güldibi, U. Köklü, O. Koçar, E. Kocaman, S. Morkavuk

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Abstract

As a maraging steel, Corrax, is used in many engineering applications in the manufacturing, aerospace, and medical industries thanks to its properties such as high strength, hardness and corrosion resistance. However, these high specifications can cause some issues for manufacturing operations such as forging, machining, grinding. In addition to that, using heat treatment applications changes materials' mechanical specifications, affecting the material's behavior during machining. Therefore, it is important to characterize the influences of different heat treatment conditions on the material's property and behavior. In this study, the effects of heat treatment process on the mechanical properties, drilling machinability and corrosion resistance of Corrax steel were experimentally investigated with the samples of solution heat treated and aged at 400 °C, 525 °C, 600 °C, and 700 °C. The machinability was evaluated based on thrust force, chip morphology, hole quality, and tool wear. The results showed that the thrust force, torque and hole quality depend on feed rate, cutting speed, and mechanical properties affected by aging treatment. The highest hardness (47.4 HRC), ultimate tensile strength (1720 MPa), maximum elongation (33%), and toughness (198 jm^-3) were obtained for the sample which aged at 525 °C for four hours, consequently the highest cutting force and surface roughness results were measured for this sample. Better hole surface quality and less burr formation were observed in the samples aged at 600 °C and 700 °C, and not-aged. On the other hand, while the highest value of corrosion potential were measured in the sample aged at 400 °C, the lowest corrosion potential value were measured in the sample aged at 700 °C.

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固溶热处理后的时效过程对 Corrax 钢钻孔加工性的影响

作为一种马氏体时效钢，Corrax 凭借其高强度、高硬度和耐腐蚀等特性，在制造业、航空航天和医疗行业的许多工程应用中得到广泛使用。然而，这些高规格可能会给锻造、机加工、磨削等制造操作带来一些问题。此外，热处理应用会改变材料的机械规格，影响材料在加工过程中的行为。因此，确定不同热处理条件对材料性能和行为的影响非常重要。在本研究中，实验研究了热处理工艺对 Corrax 钢的机械性能、钻孔加工性和耐腐蚀性的影响，样品分别在 400 ℃、525 ℃、600 ℃ 和 700 ℃ 下进行固溶热处理和时效处理。根据推力、切屑形态、孔质量和刀具磨损情况对可加工性进行了评估。结果表明，推力、扭矩和孔质量取决于进给速度、切削速度以及时效处理所影响的机械性能。硬度（47.4 HRC）、极限抗拉强度（1720 兆帕）、最大伸长率（33%）和韧性（198 jm-3）最高的是在 525 °C 下老化四小时的试样，因此该试样的切削力和表面粗糙度也最高。在 600 ℃ 和 700 ℃ 下老化的试样与未老化的试样相比，孔表面质量更好，毛刺形成更少。另一方面，在 400 °C 下老化的样品测得的腐蚀电位值最高，而在 700 °C 下老化的样品测得的腐蚀电位值最低。

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来源期刊

Experimental Techniques 工程技术-材料科学：表征与测试

CiteScore

3.50

自引率

6.20%

发文量

审稿时长

5.2 months

期刊介绍： Experimental Techniques is a bimonthly interdisciplinary publication of the Society for Experimental Mechanics focusing on the development, application and tutorial of experimental mechanics techniques. The purpose for Experimental Techniques is to promote pedagogical, technical and practical advancements in experimental mechanics while supporting the Society''s mission and commitment to interdisciplinary application, research and development, education, and active promotion of experimental methods to: - Increase the knowledge of physical phenomena - Further the understanding of the behavior of materials, structures, and systems - Provide the necessary physical observations necessary to improve and assess new analytical and computational approaches.