Development Of Query System For Hot Deformation Resistance Of Aluminum Alloys

Aluminum alloys are in the nature of thermal conductivity, corrosion-resistance, electric conductivity, high specific strength and specific stiffness. Today our construction work has been developed very rapidly in recent years, higher requirements for properties of materials are demanded. So does processing technology. Study of aluminum alloys deformation resistance will guide productive practice. Tests based on experiments, develops Query System for Hot Deformation Resistance of Aluminum Alloys.1. The hot deformation behaviors of20kinds of aluminum alloys including1050alloys were studied by means of compression deformation tests on Gleeble1500machine at strain rates ranged between0.01s-1～20s-1and deformation temperature300℃-500℃. Collect data as time, true strain and true stress, and draw the true stress-true strain curves. The deformation resistance of1050alloys exhibits a peak stress at critical strain and decreases monotonically. Then the curves enter steady-state deformation stage.2. Maximum stress for aluminum alloy can be represented by a Zener-Hollomon parameter in the hyperbolic-sine-type equation. Process the nachgeschaltet data, build models (equations) and database, make calibration of deformation resistance models (equations). The hot deformation activation energy Q of1050alloys is160.4525kJ/mol. Relative errors between calculated peak stress and measured peak stress are all within15%.3. On the base of a great quantity of experimental data, using Visual Basic, ADO and ActiveX Technology, build the database about aluminum alloy trademark, temperature, strain rate, strain and stress. Users can query date about aluminum alloy deformation through this software, which has the function of editor, query, modification, deletion, and so on.