The Study On Erosion Wear Of Ai-2.77mn Composite Materials Under Different Abrasive Parameters

With the rapid development of the global economy, human sciences haveaffected the original laws of nature. The world is facing a serious freshwater shortageunder the background of global warming.Particularly, Lacking of freshwaterresources in China is common. In recent years, advanced water-saving irrigationtechnology was introduced to China. In the same time, constantly innovation is neverstop. Erosion wear one of the common Problems in the application of materials in theliquid一solid two一Phase environment, every year erosion wear leads to energy andeconomic loss. This study aims to provide theoretical basis of abrasion flowcomponents in water-saving irrigation in agriculture and forestry. The actual miningand natural environment in Xinjiang region is modeled. The reinforced Al-2.77%Mnby Al2O3particles and Al-2.86%Mn alloy are made by stir casting method. Thecomposite tissue components of the abovementioned two materials are analyzed.Moreover, Weight loss rate under different experimental parameters are used toanalyze their anti-erosion ability.Results obtained by scanning electron microscopy ofthe microstructure showed that Al-2.86%Mn alloy is composed by the Al matrix andMnAl6, the Al-Mn compounds of Al11Mn4and Al containing metal Mn solidcomposition. Al2O3particle reinforced Al-2.77%Mn composite material is on thebasis of the distribution of the Al2O3granules.The two materials have low weight lossrates at low speed. Especially when the abrasive content is1%, the weight loss ofAl-2.86%Mn alloy has a upper bound of0.192g/m2h. And the Al-2.77%Mncomposite is0.144g/m2h; As the speed increases, the weight loss of two materialssignificantly increased in the same parameters. Especially at high speed, the weightloss has the upper bound of156.0g/m2h (Al-2.86%Mn alloy) when the abrasivecontent is1%. The weight loss peak is19times when the speed is7m/s or77.6timeswhen the speed is3.5m/s.The offset direction of the weight loss peak point to thedirection of grind grain size increasing.Weightlessness rate under3percent abrasive material content is significantly greater than1%abrasive content. Under the sameexperimental parameters, weight loss rate of Al-2.86%Mn alloy has been greater thanAl2O3particle reinforced Al-2.77%Mn composite materials, Which illustrate theAl2O3particle reinforced Al-2.77%Mn composite materials surface is dotted withmore MnAl6and Al11Mn4and Al2O3particle with a better anti-erosion performance.