Dynamic mechanical response and a constitutive model of Fe-based high temperature alloy at high temperatures and strain rates

Xiang Su; Gang Wang; Jianfeng Li; Yiming Rong

doi:10.1186/s40064-016-2169-6

Dynamic mechanical response and a constitutive model of Fe-based high temperature alloy at high temperatures and strain rates

Springerplus. 2016 Apr 23:5:504. doi: 10.1186/s40064-016-2169-6. eCollection 2016.

Authors

Xiang Su¹, Gang Wang², Jianfeng Li³, Yiming Rong⁴

Affiliations

¹ Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education, Shandong University, Jinan, 250001 China ; Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control, Beijing, 100084 China.
² Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control, Beijing, 100084 China.
³ Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education, Shandong University, Jinan, 250001 China.
⁴ Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control, Beijing, 100084 China ; Mechanical and Energy Engineering Department, South University of Science and Technology of China, Shenzhen, 518055 China.

Abstract

The effects of strain rate and temperature on the dynamic behavior of Fe-based high temperature alloy was studied. The strain rates were 0.001-12,000 s(-1), at temperatures ranging from room temperature to 800 °C. A phenomenological constitutive model (Power-Law constitutive model) was proposed considering adiabatic temperature rise and accurate material thermal physical properties. During which, the effects of the specific heat capacity on the adiabatic temperature rise was studied. The constitutive model was verified to be accurate by comparison between predicted and experimental results.

Keywords: Adiabatic temperature rise; Constitutive model; Dynamic mechanical response; SHPB; Stainless steel.