نتایج جستجو برای: metallographic microstructure

تعداد نتایج: 40830  

Journal: :International Journal of Metalcasting 2022

Abstract In this paper, the effect of microstructure a thick-walled rotor shaft for wind turbines on fracture toughness properties has been investigated. The relevant nodular cast iron grade EN-GJS-600-3 was processed using chill casting technology. Due to different solidification conditions over wall thickness, heterogeneous microstructures were formed. To illustrate influence gradient caused ...

Journal: :IEEE Access 2022

The use of metallographic images to predict the mechanical properties materials and their corrosion behavior is helpful in achieving nondestructive detection quality control. However, after a long-term attempt, traditional methods cannot accurately correlate with corresponding microstructure images. In this study, we propose deep learning strategy property large-scale extruded aluminum profiles...

Journal: :IOP conference series 2022

Abstract The influence of microstructural defects on the corrosion resistance AISI 316L additively manufactured with Metal Binder Jetting in high Cl - environments were studied herein. A comprehensive metallographic examination was conducted to identify followed by a study electrochemical techniques aim finding correlations between impurities microstructure and preferential nucleation sites. De...

Journal: :Journal of physics 2023

Abstract In order to study the influence of additive manufacturing thickness coal mining machine-guide slide shoe on microstructure and properties wear-resistant layers, four kinds layers with different thicknesses were mainly manufactured in this paper. The cladding wear resistance was further clarified by analyzing metallographic structure, hardness, material. experimental results show that l...

2012
John T. Wasson Peter Hoppe

We report a pilot study of a new technique to use the distribution of Co between kamacite and taenite to infer relative cooling rates of iron meteorites; data of Widge and Goldstein (1977) showed that the distribution is temperature dependent. A plot of the logarithm of the double ratio [(Co/Ni)kamacite/(Co/Ni)taenite] (abbreviated Rac) against inverse temperature yields a linear equation showi...

Journal: :Metals 2021

This paper explores the consequences of applying an ultrasonic vibration-assisted ball burnishing process and its non-vibration assisted version on topology subsurface microstructure a transformation-induced plasticity AISI 301LN alloy. More specifically, four different metallographic conditions provided as 1.5-mm thickness sheets characterized by starting martensite content (3, 10, 20 40 wt.%)...

Journal: :Metallography, Microstructure, and Analysis 2023

Abstract The area of Vértesszőlős was a populated during the wide period Bronze Age. Artifacts from different cultures, and among them, many bronze objects were found. Most are ornaments, but tools weapons have also been unearthed. found fragment sword, blade tip fragment, dagger. primary purpose study is metallographic analysis to reveal characteristics their alloys manufacturing technique. It...

Journal: :Journal of materials research and technology 2022

In this work, the formation of austenite in intercritical interval under continuous heating and isothermal holding ductile iron with various chemistries was investigated using high-resolution dilatometry quantitative metallographic analysis. The study conducted fully ferritic pearlitic matrices as initial microstructures. Subsequently, a mathematical model based on Avrami's equation, that descr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی موادو متالورژی 1386

مقاومت به خستگی حرارتی یک خاصیت ذاتی و مجرد مواد محسوب نمی شود . خستگی حرارتی پدیده پیچیده ایست که به عوامل مختلفی از جمله خواص فیزیکی خواص مکانیکی ریز ساختار سیکلهای حرارتی شکل شکل و اندازه قطعه بستگی دارد به دلیل ماهیت پیچیده آن تاکنون تیوری کاملی که از یک تحلیل ریاضی سرچشمه گرفته شده باشد برای بیان مقاومت به خستگی حرارکتی و پیشگویی آن ارایه نشده است قطعاتی از جمله سیلندر سرسیلندر و پیستون ات...

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