Improvement the mechanical characteristics of alloy steel DIN 41Cr4 by shot peening
Other Title(s)
تحسين الخواص الميكانيكية للفولاذ السبائكي DIN 41Cr4 بإستخدام تقنية السفع بالكريات
Joint Authors
Jayyad, Jumah Salman
Mahmud, Zaynah Shakir
Source
Issue
Vol. 26, Issue 7 (31 Jul. 2020), pp.1-15, 15 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2020-07-31
Country of Publication
Iraq
No. of Pages
15
Main Subjects
Topics
Abstract AR
تم دراسة تأثير السفع بالكريات المعدنية بازمان مختلفة على سلوك كلال الانحنائي الدوار و سلوك الاهتزازات للفولاذ السبائكي DIN 41Cr4.
اختبار الصلادة، اختبار الشد، اختبار الكلال ذو السعة الثابتة، و قراءات الاهتزاز تم إجراءها على العينات مع وبدون تشققات في درجة حرارة الغرفة (RT)، وتم رصد سطح الكسر و تحليله بواسطة مجهر الكتروني (SEM).
نتائج الفحص كمنحنيات الإجهاد الى عدد الدورات للوصول الى الفشل(منحنيات (S-N، عامل تحسين مقاومة الكلال يتراوح بين 5% و 10%، وتمت مقارنة النسبة المئوية لتناقص تعجيل تحويل فورييه السريع (FFT) قبل و بعد السفع بالكريات و التي تراوحت بين 25% و 40%.
كل هذة التحسينات حدثت عند السفع لمدة تتجاوز 20دقيقة (20 SPT).
بعد هذا الوقت يميل سلوك الكلال للإنخفاض.
Abstract EN
The effects of shot peening treatment (SPT) were studied at (10, 20, and 30) minutes on the rotating bending fatigue behavior and the behavior of the alloy steel DIN 41Cr4 vibrations.
The hardness test, tensile test, constant amplitude fatigue tests, and the vibration measurements were performed on samples with and without cracks at room temperature (RT), also, the fracture surface was examined and analyzed by a Scanning Electron Microscope (SEM).
The results of the investigations, for example, Stress to Number of cycles to failure (S-N) curves, fatigue strength improvement factor of 5% to 10%, the decreasing percentage of maximum Fast Fourier Transform (FFT) acceleration of the shot-peened condition were compared to untreated conditions ranging between 25% and 40%.
All these improvements occurred for up to 20 minutes of shot peening time (20 SPT), exceeding that time the fatigue behavior tended to decrease due to high roughness and the generation of tensile residual stress.
American Psychological Association (APA)
Mahmud, Zaynah Shakir& Jayyad, Jumah Salman. 2020. Improvement the mechanical characteristics of alloy steel DIN 41Cr4 by shot peening. Journal of Engineering،Vol. 26, no. 7, pp.1-15.
https://search.emarefa.net/detail/BIM-972853
Modern Language Association (MLA)
Mahmud, Zaynah Shakir& Jayyad, Jumah Salman. Improvement the mechanical characteristics of alloy steel DIN 41Cr4 by shot peening. Journal of Engineering Vol. 26, no. 7 (Jul. 2020), pp.1-15.
https://search.emarefa.net/detail/BIM-972853
American Medical Association (AMA)
Mahmud, Zaynah Shakir& Jayyad, Jumah Salman. Improvement the mechanical characteristics of alloy steel DIN 41Cr4 by shot peening. Journal of Engineering. 2020. Vol. 26, no. 7, pp.1-15.
https://search.emarefa.net/detail/BIM-972853
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 15
Record ID
BIM-972853