Ultrafast miniaturised assessment of high-temperature creep properties of metals
Ultrafast miniaturised assessment of high-temperature creep properties of metals
复制标题
金属高温蠕变性能的超快小型化评估
DOI：
10.1016/j.matlet.2019.01.011
复制
发表时间：
2019
影响因子：
3
通讯作者：
Barba D
中科院分区：
文献类型：
--
作者：
Barba D
提出了一种新的方法，大大加快和简化了金属蠕变性能的测定。该方法结合了先进的数字图像相关，热成像和传导分级加热，以产生和分析在恒定应力下的连续温度范围内的粘塑性变形。通过在不同温度下区分样品的小部分上的应变，可以提取许多不同温度下的蠕变行为，从而导出活化能。只需要一个测试和样本就可以做出第一个合理的估计。该方法适用于所有的金属和合金，但在这里验证的原型镍基单超合金。
A novel approach to accelerate greatly and simplify the determination of creep properties in metals is presented. The method combines advanced digital image correlation, thermal imaging, and conductive graded heating to produce and analyse viscoplastic deformation in a continuous range of temperatures at constant stresses. By differentiating the strain across small sections of the sample at different temperatures, one may extract the creep behaviour at many different temperatures and thus derive the activation energy. Just a single test and specimen is needed to make a first reasonable estimate. The method is suitable for all metals and alloys but is validated here for a prototype Ni-based single superalloy.
影响因子：
6
作者：
Barba, D.;Pedrazzini, S.;Reed, R. C.
通讯作者：
Reed, R. C.
DOI：
10.1115/1.4040553
发表时间：
2019-01-01
影响因子：
1.2
作者：
Arrieta, Edel;Haque, Mohammad;Wicker, Ryan B.
通讯作者：
Wicker, Ryan B.