کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
778161 1463744 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fretting fatigue characteristic of Ti–6Al–4V strengthened by wet peening
ترجمه فارسی عنوان
ویژگی های خستگی مفرط Ti-6Al-4V تقویت شده توسط peening مرطوب
کلمات کلیدی
آلیاژ Ti-6Al-4V؛ خستگی موضعی؛ خستگی مفرط
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• We invented a new apparatus for the fretting fatigue tests.
• The fretting fatigue property of Ti–6Al–4V was increased by wet peening treatment.
• The hardness and residual stress synergistically retard the crack growing.

This study investigated the effects of wet peening treatment on the fretting fatigue behavior and crack propagation in Ti–6Al–4V alloy. Wet peening induced a compressive residual stress at 0–160 μm depth and enhanced the hardness at 0–80 μm depth. Results of the fretting fatigue tests show that the fretting damage could efficiently reduce the fatigue life of both the un-peened and wet peened samples. Moreover, wet peening could effectively increase the fretting fatigue resistance. Investigation on crack propagation mechanism revealed that the increased resistance is due to the synergistic effect of the enhanced hardness and the induced compressive residual stress in the wet peening modified layer. The enhanced hardness could resist the local fatigue in the fretting cracking stage and the compressive residual stress could retard crack growth.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 85, April 2016, Pages 65–69
نویسندگان
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