دورية أكاديمية

Estimates of the mechanical properties of laser powder bed fusion Ti-6Al-4V parts using finite element models

التفاصيل البيبلوغرافية
العنوان: Estimates of the mechanical properties of laser powder bed fusion Ti-6Al-4V parts using finite element models
المؤلفون: Qi Zhang, Jiawen Xie, Tyler London, David Griffiths, Imran Bhamji, Victor Oancea
المصدر: Materials & Design, Vol 169, Iss , Pp - (2019)
بيانات النشر: Elsevier, 2019.
سنة النشر: 2019
المجموعة: LCC:Materials of engineering and construction. Mechanics of materials
مصطلحات موضوعية: Materials of engineering and construction. Mechanics of materials, TA401-492
الوصف: While significant progress has been made in the last few years, the structural integrity and reliability of Additively Manufactured (AM) parts is often questionable and inconsistent due to manufacturing defects, subpar strength, and low fatigue lives. Parallel work by the authors presented a generic simulation framework to predict metallurgical properties of AM parts. The framework was tested in one-element simulations of two alloys, and was applied to simulate the Selective Laser Melting (SLM) process of Ti-6Al-4V samples. In this work, the resulting validated predictions for volume fractions of phases and thicknesses of lamellar structures are used as input into numerical models for mechanical properties predictions. Experimental work was conducted in order to validate numerical predictions of tensile tests on dogbone specimens in the as-built and heat-treated condition. Comparisons between experiments and numerical predictions suggest that such modelling techniques, with minimal calibration efforts, can be used to predict the strength behavior including softening beyond the uniform elongation limit. Keywords: AM process simulation, Powder bed fabrication, Mechanical properties, Validation, Finite elements, Selective laser melting
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 0264-1275
Relation: http://www.sciencedirect.com/science/article/pii/S0264127519301157; https://doaj.org/toc/0264-1275
DOI: 10.1016/j.matdes.2019.107678
URL الوصول: https://doaj.org/article/f6553427cb364aa3a0d1c5feff68a4ee
رقم الأكسشن: edsdoj.f6553427cb364aa3a0d1c5feff68a4ee
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:02641275
DOI:10.1016/j.matdes.2019.107678