简介概要

IN-SITU OBSERVATION OF CRACK PROPAGATION IN PST CRYSTALS OF Ti-49%Al ALLOY

来源期刊:中国有色金属学报(英文版)1999年第1期

论文作者:Lu Yonghao Zhang Yonggang Chen Changqi

文章页码:63 - 69

Key words:PST crystal; fracture behavior; crack path; toughness mechanism

Abstract: The effects of loading axis to the lamellae on the fracture behavior of PST crystals have been investigated by SEM in-situ testing. The results show that the fracture behavior of PST crystals ofγ-TiAl base alloys depend on not only the angles between cracks and lamellae, but also the angles of loading axis to the lamellae, and the cracks propagating along different paths show different toughening mechanisms, crack resistance, corresponding fracture behavior and fractography.

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