Chenying Xi, Lin Song, Yunxi Liu, Daria Lazurenko, Tiebang Zhang
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引用次数: 0
Abstract
Compared to α + β titanium alloys, β titanium alloys exhibit superior heat treatment strengthening effects. Specifically, after solid solution treatment followed by two-stage aging, the alloy features finer secondary α (αs) phases compared to primary α (αp) phases, resulting in enhanced second phase strengthening effects. This study focuses on the effects of various aging parameters on the texture evolution of an as extruded high strength metastable β titanium alloy Ti-4Al-6V-5Mo-3Cr-1Zr using synchrotron high-energy X-ray diffraction and electron microscopy. After extrusion, two primary fiber textures are formed within the β phase: < 200 > and < 110 > fiber texture. The intensity of β phase texture fluctuates during aging primarily attributed to phase transformations altering the volume fractions of the two phases. The α phase predominantly exhibited the conventional < 0002 > fiber texture, along with an unconventional < 10 \(\overline{1 }\) 1 > component rarely reported in prior studies of metastable β titanium alloys, with their orientations rotating during high-temperature aging. This rotation originates from variant selection during the precipitation of αs phase from the β matrix, leading to crystallographic orientations distinct from the preferred orientation of αp phase formed during extrusion.
期刊介绍:
The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.