Tài liệu Thư viện số

Danh mục TaiLieu.VN

Effect of Residual Stress in Chrome Plating Layer to Fatigue Strength of Axle-Shaped Machine Parts

Chromium plating is used widely in industry to enhance wear, abrasion resistance and to restore the dimensions of undersized parts. However, tensile residual stress always exists in chrome layer because of hydrogen embrittlement so it affect to mechanical properties of the chromium plating machine element, especially in fatigue strength. In this paper, effect of residual stress in chrome plating layer to fatigue strength was studied. The sample (AISI 1045 steel) was plated with 10 and 60 micrometers thicknesses and residual stress in chrome plating layer was determined by X-ray diffraction technique (Cu-Kα radiation). The results showed that chromium layer thicknesses go up, tensile residual stress decrease and microcrack density increase. Consequently, fatigue strength goes down when chromium layer thicknesses increase.

Từ khóa: fatigue strength, residual stress, chrome plating, x-ray diffraction and microcrack

8 p ovanketv 07/06/2019 391 2

Bạn đang xem trang mẫu tài liệu này.
Bình luận