A New Horizon for Barreling Compression Test: Exponential Profile Modeling

作者：Fardi Mehdi; Abraham Ralph; Hodgson Peter D; Khoddam Shahin^*

来源：Advanced Engineering Materials, 2017, 19(11): 1700328.

DOI：10.1002/adem.201700328

• analytical solution
• constitutive behavior
• dynamic recrystallization
• friction factor
• hot characterization
• hot compression test

Exponential Profile Model (EPM) has been recently proposed to interpret barreling compression test's (BCT) data. A basic solution of EPM enables estimation of friction factor and to calculate distributions of strain rate (and strain) in the sample. These critical pre-requisites allow to identify material's flow behavior and to indirectly measure static, dynamic, and meta-dynamic recrystallization properties of the material based on the behavior. In this work, EPM's basic solution is employed in a fixed friction factor mode, the model is assessed and its potentials are outlined. The assessment includes comparing EPM's sample solutions with two reference solutions. The references are a non-isothermal finite element model of BCT and the commonly used solution of the test; Cylindrical Profile Model (CPM). It is shown that despite variations of strain, strain rate, and temperature in Al1050 and AISI 304 stainless steel BCT samples, EPM's solutions agree reasonably well with the finite element solutions. This is particularly true for effective strains bellow 0.7 and friction factors bellow 0.2. It is concluded that EPM presented a far more reliable solution than CPM.

• 出版日期2017-11
• 单位迪肯大学