استفاده از مدلی بر اساس مکانیزم بیرون کشیدن ذرات M23C6 در زمینه فولاد ابزار 1.2542 به منظور تخمین چقرمگی و استحکام

نوع مقاله : علمی و پژوهشی

نویسندگان

1 دانشگاه آزاد اسلامی واحد آیت الله آملی

2 دانشگاه آزاد اسلامیواحد علوم و تحقیقات تهران

3 دانشگاه علم وصنعت ایران

چکیده

با استفاده از روشهایی که برای تخمین استحکام و چقرمگی مواد مرکب بکار می رود در طراحی آنها، سعی و خطا کاهش می یابد. در استحکام و چقرمگی این نوع مواد، استحکام فصل مشترک تقویت کننده با زمینه و سطح موثر ذرات بیرون کشیده شده بسیار تاثیر گذار هستند. در این تحقیق با ارایه مدلی، استحکام فصل مشترک تقویت کننده با زمینه و مدول چقرمگی و استحکام تخمین زده می شود و بطور موردی برای ماده مرکب حاوی تقویت کننده ذره ای M23C6 در زمینه فولاد ابزار 1.2542 محاسبه می شود. نتیجه آنکه، سهم مکانیزم بیرون کشیدن ذرات M23C6 در افزایش چقرمگی از 003/0 تا 007/0 درصد و سهم آن در افزایش استحکام 3/9 درصد است.

کلیدواژه‌ها

عنوان مقاله [English]

A Model Based on Pull-out Mechanism of M23C6 Particles in Matrix of 1.2542 Tool Steel for Estimation of Toughness and Strength

نویسندگان [English]

  • Seyed Ebrahim Vahdat 1
  • said nategh 2
  • shamsodin Mirdamadi 3
1 Islamic Azad University, Amol
2 Islamic Azad University, Amol
3 3 School of Metallurgy and Materials Engineering
چکیده [English]

The use of methods employed for estimating the strength and toughness of composites reduces the trial-and-error in their design. The strength of interface between reinforcement and matrix and the effective surface of pulled-out particles have great influences on toughness and strength of these composites. In this study, a model was proposed to estimate the interface strength and matrix strength of the composite and their effects on the toughness and strength were investigated. In addition, the strength of interface and its influence on increasing the toughness and strength were examined for a composite sample containing M23C6 particles as the reinforcement component within the matrix of 1.2542 tool steel.

کلیدواژه‌ها [English]

  • Design of composite
  • Particles population density
  • Strength of interface

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