Investigation of the material combination 20MnCr5 and X45CrSi9-3 in the Tailored Forming of shafts with bearing seats

Budde, Laura; Biester, Kai; Merkel, Paulina; Lammers, Marius; Kriwall, Mareile; Hermsdorf, Jörg; Stonis, Malte; Behrens, Bernd‐Arno; Overmeyer, Ludger

doi:10.1007/s11740-022-01119-w

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…A lath martensitic microstructure with retained austenite could be seen in H45. [ 75 ] A preferred orientation was not directly evident. The heat‐affected zone was not as pronounced as with H100.…”

Section: Methodsmentioning

confidence: 99%

Wear of Tailored Forming Steels

et al. 2023

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This study investigates the wear behavior of additively welded cladding layers on less wear‐resistant base materials using plasma‐transferred arc welding and laser hot‐wire cladding. The cladding layers are made from atomized AISI 52100, AISI 5140, and a stainless steel with (0.52 wt% C, 0.9 wt% Si, 14 wt% Cr, 0.4 wt% Mo, 1.8 wt% Ni, 1.2 wt% V, bal. Fe) on unalloyed steel AISI 1022M as the base material. The specimens' microstructure and surface hardness are comparable with conventional specimens of monolithic AISI 52100 and AISI 4140, which is used as a reference. Tribometer tests are carried out in ball‐on‐disk configuration to investigate the wear resistance of the specimen. The multimaterial specimens show comparable wear behavior to their monolithic counterparts, and a good performance of the stainless specimen in pure sliding is proven. These findings suggest that additive manufacturing processes can be used to clad less wear‐resistant base materials and achieve high wear resistance, making it possible to exploit the advantages of surface coatings under severe wear conditions.

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Section: Methodsmentioning

confidence: 99%

Wear of Tailored Forming Steels

et al. 2023

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“…Concrete example of a paper 8 described in the ORKG 9 : Blue shapes are resources and predicates of the ORKG schema. Yellow shapes are user-generated resources and predicates.…”

Section: Figurementioning

confidence: 99%

The SciQA Scientific Question Answering Benchmark for Scholarly Knowledge

Auer

Barone

Bartz

et al. 2023

Sci Rep

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Knowledge graphs have gained increasing popularity in the last decade in science and technology. However, knowledge graphs are currently relatively simple to moderate semantic structures that are mainly a collection of factual statements. Question answering (QA) benchmarks and systems were so far mainly geared towards encyclopedic knowledge graphs such as DBpedia and Wikidata. We present SciQA a scientific QA benchmark for scholarly knowledge. The benchmark leverages the Open Research Knowledge Graph (ORKG) which includes almost 170,000 resources describing research contributions of almost 15,000 scholarly articles from 709 research fields. Following a bottom-up methodology, we first manually developed a set of 100 complex questions that can be answered using this knowledge graph. Furthermore, we devised eight question templates with which we automatically generated further 2465 questions, that can also be answered with the ORKG. The questions cover a range of research fields and question types and are translated into corresponding SPARQL queries over the ORKG. Based on two preliminary evaluations, we show that the resulting SciQA benchmark represents a challenging task for next-generation QA systems. This task is part of the open competitions at the 22nd International Semantic Web Conference 2023 as the Scholarly Question Answering over Linked Data (QALD) Challenge.

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“…Lazer dolgu kaynağı teknolojisi, yüzey modifikasyonu yaratarak yeni bir yaklaşım sağlaması ile ön plana çıkmaktadır: temel malzemenin üzerine daha üstün özelliklere sahip bir malzemenin kaplanması ile istenilen mekanik özellikler elde edilebilmektedir. Lazer dolgu kaynağı, lazer ışınının temel malzeme üzerindeki odak bölgesine aktarılması ve eş zamanlı olarak toz dolgu malzemesinin püskürtülmesi prensibine dayanmaktadır [1][2][3][4]; çok etkileşimli bir yöntem olduğundan malzeme ve proses parametrelerinin etkisi birlikte incelenmelidir.…”

Section: Introductionunclassified

Küresel Grafitli Dökme Demir Kalıp Malzemesi Üzerine Farklı Toz Malzemeleri Kullanılarak Lazer Dolgu Kaynağı Uygulaması

KARŞI¹,

Altay

Aydın

et al. 2022

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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Lazer dolgu kaynağı, toz malzemenin püskürtülerek bir lazer ışını yardımı ile temel malzemenin ergitilmesi prensibine dayanır; yüzey modifikasyonu yaratarak yeni bir yaklaşım sağlaması ile ön plana çıkmaktadır. UTP PLASweld Ferro55 ve UTP PLASweld 73G3 toz malzemeleri kullanılarak GGG-70L küresel grafitli dökme demir kalıp malzemesi üzerine lazer dolgu kaynağı uygulanmıştır; farklı iki toz dolgu malzemesinin kaplama kalitesi üzerindeki etkileri araştırılmıştır, elde edilen çıktıların otomotiv sac metal şekillendirme kalıplarının tamiratında kullanılması hedeflenmiştir. Lazer gücü, ilerleme hızı, toz debisi parametreleri değişimlerinin kaynak geometrisi, mikro sertlik, çatlak ve gözenek oluşumuna etkisi incelenmiştir, Taguchi L9 ortagonal dizisi kullanılarak optimum proses parametreleri belirlenmiştir. Ferro55 malzemesi için yüksek seviye lazer gücü (1,7 kW), UTP 73G3 toz malzemesi için düşük seviye ilerleme hızı (9 mm/s) parametrelerinin kullanılması kaynak geometrisi açısından optimum sonuçlar vermektedir. Gözenek oluşumu açısından Ferro 55 malzemesi daha iyi konumda iken; UTP 73G3 malzemesinin çatlak oluşumu riski daha düşüktür. Elde edilen maksimum mikro sertlik değerleri birbirine yakındır (777,3 HV0,1).

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Investigation of the material combination 20MnCr5 and X45CrSi9-3 in the Tailored Forming of shafts with bearing seats

Cited by 8 publications

References 22 publications

Wear of Tailored Forming Steels

Wear of Tailored Forming Steels

The SciQA Scientific Question Answering Benchmark for Scholarly Knowledge

Küresel Grafitli Dökme Demir Kalıp Malzemesi Üzerine Farklı Toz Malzemeleri Kullanılarak Lazer Dolgu Kaynağı Uygulaması

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