期刊
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
卷 83, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.euromechsol.2020.104034
关键词
Constitutive model; Dynamic strain aging; Probability function; HCP metals; Titanium
类别
资金
- National Science Foundation EPSCoR CIMM [OIA-1541079]
Dynamic strain aging hugely affects the microstructural mechanical behavior of metallic materials when activated. It has been extensively reported in the literature that the dynamic strain aging causes significant gaps between model predictions and experimental measurements. Without considering this phenomenon, a constitutive model is unable to accurately capture the material behavior when it is active. The new constitutive model for hexagonal close-packed metals is developed in this work to predict the dynamic strain aging-induced hardening based on the probability function. The proposed model consists of three elements, i.e. dynamic strain aging-induced flow stress as well as thermal and athermal flow stresses. Physically motivated derivation of all the three elements is presented. The proposed model is applied to pure hexagonal close-packed titanium under quasi-static loading ((epsilon) over dot = 0.001/s and (epsilon) over dot = 0.1/s) to dynamic loading ((epsilon) over dot = 2200/s and (epsilon) over dot = 8000/s) across a broad range of temperatures (77 1000 K).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据