Experimental Study Of The 3003,3004 And5052 Diffraction Parameters

In the process of manufacturing , component will inevitably introducing residual stress.Residual stress is one of the important indexes to measure components’ quality, it also havevery important influence in the components’ fatigue strength , stress corrosion resistance, sizestability, resistance to brittle fracture ability and service life and so on . In addition, aluminumalloy which is of a class of nonferrous metal is widely used in the industry , its applicationfield covers the aviation, aerospace, automobile and other industries , and have broadprospects . In view of the measure of residual stress tends to undamage and automation , andthe X-ray diffraction method is most common in the measure of undamage and automation ,so it has great significance in studying the diffraction parameters of the typical brand ofaluminum alloy .This paper first introduces the basic principle of X-ray diffraction method of measuringresidual stress and common method used in the experiment, so as to determine the specificexperimental project; And then through applying linear load on the typical aluminum alloygrades 3003, 3004 and 5052beam of constant strength ,to produce static stress, in order toinvestigate the correlation of measuring result between electrical measuring method and X-raydiffraction method , so as to achieve the purpose of the research of the diffraction parameters ;Finally , in order to verify the accuracy of the diffraction parameters , measure the stress of3003 aluminum alloy welding plate.The experimental results of the beam of constant strength show that : 3003, 3004 and5052 beam of constant strength ,when they under the circumstance of linear load , whenBragg Angle in 156°, the measuring results are more close to the standard theory solution and electrical measurement values than Bragg Angle in 142°. We can come to the preliminaryconclusion based on the experimental result and checked material:○1 with the same target,the same series of aluminum alloy have same Prague Angle;○2 The Bragg Angle of the 2000series is 142°, the Bragg Angle of the 3000 series is 156°, the Bragg Angle of the 5000 seriesis 156°.To verify the accuracy of the diffraction parameters, we measured 3003 aluminum platewelding residual stress in the Prague Angle of 156°, found that the measurement results arealmost consistent with the expected data.The results of this paper have reference value to the standardization of the aluminumalloy residual stress which measured by X-ray , and have theoretical guidance to the factoryproduction practice .