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对于微合金化的碳的质量分数为0.15%~0.35%的CSiMnCrVNb合金钢,通过控制锻造比获得11~12级奥氏体原始晶粒。研究了试验钢的磨擦磨损行为,结果表明:干摩擦磨损条件下,碳含量较低的试验钢随载荷及磨损速度的增加,其磨损形式逐渐由显微切削转变为严重的粘着磨损并伴有疲劳剥落现象;碳含量较高的试验钢随载荷和磨损速度的增加,其磨损形式仍以显微切削为主,但犂沟变宽、加深,并伴有轻度粘着磨损及疲劳剥落现象。在动载冲击磨损条件下,其磨损形式以磨料磨损为主。碳的质量分数为0.35%的试验钢具有较好的组织、综合力学性能,在磨损过程中既可以抵抗石英砂磨粒的切削,又可以减少表面金属的剥落,表现出较佳的耐磨性。

For(0.15%0.35%)low alloyed CSiMnCrVNb steels austenite grains of 1112 grade can be obtained by controlling the forging ratio.The abrasive property of such steel was studied.The results show,for low carbon grade, the micro cutting gradually changes into serious adhesion abrasion with the increase of load and abrasion velocity of dry friction. For the steel grade with higher carbon content, whose major wearing form is micro cutting, the pan furrows are wider and deeper with minimal adhesion abrasion and spalling fatigue. Under the condition of dynamic load, the major wear form is grinding abrasion. The alloy of 035% carbon content, which can not only resist the cutting of quartz particles, but also can reduce the spalling, has better structure, performance and perfect abradability.

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