CHANGE IN MICROSCOPIC HARDNESS DURING TENSILE PLASTIC DEFORMATION OF POLYCRYSTALLINE ALUMINUM AND TITANIUM

被引：0

作者：

Wang, Xiaoqun ^{[2
]}

Abe, Takeji ^{[1
]}

机构：

[1] Tsuyama Coll Technol, Okayama 7000080, Japan

[2] Panason Home Appliances Co Ltd, R&D Ctr, Hangzhou 310018, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2008年 / 22卷 / 31-32期

关键词：

Plasticity; polycrystalline metal; aluminum; titanium; micro-hardness; inhomogeneous deformation;

D O I：

10.1142/S0217979208051492

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Microscopic hardness on free surface of polycrystalline metal during plastic deformation is closely related to the inhomogeneous deformation in respective grains. Uniaxial tensile tests were carried out on annealed pure aluminum sheet specimens with different averaged grain size and also on annealed pure titanium sheet specimen. The microscopic hardness was measured with the Vickers type micro-hardness testing machine. The increase in micro-hardness is larger at the grain boundary area than the central area of grains. The increase in the hardness is dependent on the averaged grain size of polycrystalline metals. The experimental results are discussed in relation to Hall-Petch relation concerning the grain size dependence of the yield stress or the flow stress.

引用

页码：6003 / 6009

页数：7