High temperature flow behaviors and neural network based constitutive model of aluminum-tungsten alloy
The flow behaviors of the as‐extruded aluminum‐tungsten alloy were studied through single‐pass compression experi‐ments by using Gleeble1500 simulator within temperature range of 450℃ ~540℃ and strain rate range of 0.001s-1 ~1s-1 . And the constitutive relationship model for this alloy was successfully developed by using BP neural network . In the proposed model , the input variables are strain ,strain rate and temperature ,while the flow stress is the output variable .It was found that the es‐tablished constitutive relationship model could provide a good representation of the test data and better describe the whole defor‐ming process compared with that by the traditional method . Moreover , the suggested model is available to provide a convenient and effective way to develop the constitutive relationship for aluminum‐tungsten alloys .
NETL
NSTL
万方数据
维普
