相同硬度的等温球墨铸铁、硼钢和AISI 1045钢的滑动磨损行为:微观组织、屈服强度和应变硬化的影响

IF 1.6 Q4 MATERIALS SCIENCE, COATINGS & FILMS
Anoop Gupta, Manpreet Singh, Uma Batra, Sandan Kumar Sharma
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引用次数: 0

摘要

研究了四种合金的干滑动磨损:完全奥氏体化的ADI (F-ADI)、临界间奥氏体化的奥回火球墨铸铁(I-ADI)、调质硼钢(B-Steel)和调质AISI 1045钢(EN-Steel)。尽管它们的硬度水平相似,但这些合金在成分和微观结构上有所不同。采用ASTM G99-05球-盘式试验装置(ball - on - disc),在恒定滑动速度为0.6 m/s的条件下,对铬钢球施加20 ~ 80 n的载荷,研究均匀硬度条件下屈服强度(σy)、应变硬化系数(n)和显微组织对滑动磨损的影响。研究结果表明,滑动耐磨性、应变硬化系数、韧性和屈服强度之间有很强的联系。不同材料的磨损机制略有不同;F-ADI和I-ADI表现为变形层,硬度增加,氧化物形成,而B-Steel和EN-Steel表现为微切削和微犁耕。F-ADI的高碳奥氏体膜和I-ADI的共析铁素体有助于提高磨损性能。FADI和I-ADI磨损表面变形层的硬度突出了干滑动磨损中应变硬化的好处。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sliding wear behaviour of austempered ductile iron, boron steel and AISI 1045 steel of similar hardness: effect of microstructure, yield strength, and strain hardening
ABSTRACT A study on dry sliding wear investigated four alloys: fully austenitized ADI (F-ADI), intercritically austenitized austempered ductile iron (I-ADI), hardened and tempered Boron steel (B-Steel), and hardened and tempered AISI 1045 steel (EN-Steel). Despite their similar hardness levels, these alloys differ in composition and microstructure. Testing was conducted using a Ball-On-Disc setup (ASTM G99-05) with a chrome steel ball, maintaining a constant sliding speed of 0.6 m/s and applying loads between 20 and 80 N. This study aimed to understand the influence of yield strength (σy ), strain hardening coefficient (n), and microstructure on sliding wear under uniform hardness conditions. The findings indicated a strong connection between sliding wear resistance, strain hardening coefficient, toughness, and yield strength. Wear mechanisms varied slightly among materials; F-ADI and I-ADI exhibited deformed layers with increased hardness and oxide formation, while B-Steel and EN-Steel showed micro-cutting and micro-ploughing. F-ADI's high-carbon austenite film and I-ADI's proeutectoid ferrite contributed to improved wear performance. The hardness of the deformation layer on FADI and I-ADI's worn surfaces highlighted the benefits of strain hardening in dry sliding wear. GRAPHICAL ABSTRACT
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来源期刊
Tribology - Materials, Surfaces & Interfaces
Tribology - Materials, Surfaces & Interfaces MATERIALS SCIENCE, COATINGS & FILMS-
CiteScore
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