期刊
SCRIPTA MATERIALIA
卷 67, 期 10, 页码 842-845出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.08.001
关键词
Twinning; Silicides; EBSD; Plastic deformation; Machining
类别
资金
- EPSRC
- Engineering and Physical Sciences Research Council [EP/F023464/1] Funding Source: researchfish
- EPSRC [EP/F023464/1] Funding Source: UKRI
Precision turning is an energy-intensive, yet important machining operation for critical aero-structural titanium alloy parts. High-resolution electron backscatter diffraction reveals an increase in induced subsurface deformation with increasing surface speed, contradicting observations when applying standard surface integrity techniques. Subsurface microstructural damage, such as mechanical twins and intense slip bands, provides nucleation sites for suicide precipitation during thermal exposure at 750 degrees C, indicating that creep and fatigue strength could be locally reduced at the machined surface. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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