欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
扭力的烦恼处于干燥状况对 52100 钢球完全穿 7075 铝合金的测试在一个新高精确的扭力的烦恼穿测试者上被执行。在不同尖排水量振幅下面的 7075 铝合金的动力学行为和损坏机制详细被调查。结果证明 7075 铝合金的扭力的烦恼的跑的行为能被三烦恼政体定义(即部分滑动政体(PSR ) ，混合烦恼的政体(MFR ) 并且滑动政体(SR )) 随尖排水量振幅的增加。在 PSR，损坏与细微环形的形状发生在接触地区的侧面的部分。在 MFR 和 SR，然而，更严重的损坏被观察，碎片层盖住 wear 疤。强烈依赖于强加的尖排水量振幅并且在三介绍阶段的磨擦转矩和驱散精力详细被讨论。扭力的烦恼的机制铝合金穿主要是氧化的穿，磨料穿并且在三烦恼的政体的分层。另外，氧化碎片在扭力的烦恼期间起一个重要作用穿过程。
英文摘要：
The torsional fretting wear tests of 7075 aluminum alloy flat against 52100 steel ball in dry condition were carried out on a new high-precision torsional fretting-wear tester.The kinetics behaviors and damage mechanism of 7075 aluminum alloy under different angular displacement amplitudes were investigated in detail.The results show that the torsional fretting running behaviors of 7075 aluminum alloy can be defined by three fretting regimes（i.e.partial slip regime（PSR）,mixed fretting regime（MFR） and slip regime（SR）） with the increase of angular displacement amplitudes.In PSR,the damage occurs at the lateral portion of the contact zone with a slight annular shape.However,in MFR and SR,more severe damages are observed and the debris layer covers the wear scars.Friction torque and dissipation energy which are strongly dependent upon the imposed angular displacement amplitudes and presented in three stages were discussed in detail.The mechanisms of torsional fretting wear of aluminum alloy are mainly oxidative wear,abrasive wear and delamination in the three fretting regimes.In addition,the oxidative debris plays an important role during the torsional fretting wear processes.
同期刊论文项目
同项目期刊论文
位置：