東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Effect of Heat Treatment on SLM Mara...

Oliveira, Abel Loureiro.

FindBook

Google Book

Amazon

博客來

Effect of Heat Treatment on SLM Maraging C-300 Steel Parts.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Effect of Heat Treatment on SLM Maraging C-300 Steel Parts./
作者:	Oliveira, Abel Loureiro.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	72 p.
附註:	Source: Masters Abstracts International, Volume: 84-01.
Contained By:	Masters Abstracts International84-01.
標題:	Metals. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29139655
ISBN:	9798835533213

Effect of Heat Treatment on SLM Maraging C-300 Steel Parts.
Oliveira, Abel Loureiro.

Effect of Heat Treatment on SLM Maraging C-300 Steel Parts. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 72 p.

Source: Masters Abstracts International, Volume: 84-01.

Thesis (M.E.)--Universidade do Porto (Portugal), 2019.

This dissertation has been executed as part of a broader investigation on Additive Manufacturing of components for the automotive industry, for the conclusion of the master's degree in Metallurgical and Materials Engineering at the Faculty of Engineering of the University of Porto. The purpose of this work has been to evaluate the response of Maraging C-300 steel parts produced by Laser Powder Bed Fusion Metal Additive Manufacturing to age hardening heat treatment requiring the least resources possible and to assess the quality of the structures produced.Initially, this work introduces Additive Manufacturing and emphasizes the advantages of its implementation on an industrial environment and the particular challenges and limitations of Metal Additive Manufacturing, especially the reproducibility of parts and microstructures. Secondly, the processing issues of LPBF (SLM) are exposed highlighting the physical mechanisms that rule metal laser-fusion, the resulting structures and the structural defects, particularly those encountered in the parts under study. Thirdly, the materials and experimental procedures of this work are described, followed by the results obtained, which are then discussed.The objective of this dissertation was to assess the structure of SLM processed components with a specific geometry, used in cable harness production for the automotive industry. These parts were then used to optimize the aging treatment conditions to maximize the mechanical response of SLM tensile test parts built in two different orientations.The parts exhibited vertical surfaces with high roughness and a very thin microstructure with few process-induced pores and a considerable amount of Ti-Al oxides, likely due to an excess of oxygen in the melt. These parts were cut into small samples for test aging treatments and the highest hardness condition (6 hours at 490 ºC) was chosen for the aging heat treatment of the tensile test samples. The tensile test samples yielded mechanical resistance similar to conventionally fabricated parts, although with considerably less ductility. No significant anisotropy was measured between specimens built with the major axis perpendicular or parallel to the powder bed.

ISBN: 9798835533213Subjects--Topical Terms:

601053
Metals.

Effect of Heat Treatment on SLM Maraging C-300 Steel Parts.
LDR:05643nmm a2200457 4500 001 2401978
005 20241028114722.5
006 m o d
007 cr#unu||||||||
008 251215s2019 ||||||||||||||||| ||eng d
020 $a 9798835533213
035 $a (MiAaPQ)AAI29139655
035 $a (MiAaPQ)Portugal10216122700
035 $a AAI29139655
035 $a 2401978
040 $a MiAaPQ $c MiAaPQ
100 1 $a Oliveira, Abel Loureiro. $3 3772195
245 1 0 $a Effect of Heat Treatment on SLM Maraging C-300 Steel Parts.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 72 p.
500 $a Source: Masters Abstracts International, Volume: 84-01.
500 $a Advisor: Vieira, Manuel Fernando Goncalves.
502 $a Thesis (M.E.)--Universidade do Porto (Portugal), 2019.
520 $a This dissertation has been executed as part of a broader investigation on Additive Manufacturing of components for the automotive industry, for the conclusion of the master's degree in Metallurgical and Materials Engineering at the Faculty of Engineering of the University of Porto. The purpose of this work has been to evaluate the response of Maraging C-300 steel parts produced by Laser Powder Bed Fusion Metal Additive Manufacturing to age hardening heat treatment requiring the least resources possible and to assess the quality of the structures produced.Initially, this work introduces Additive Manufacturing and emphasizes the advantages of its implementation on an industrial environment and the particular challenges and limitations of Metal Additive Manufacturing, especially the reproducibility of parts and microstructures. Secondly, the processing issues of LPBF (SLM) are exposed highlighting the physical mechanisms that rule metal laser-fusion, the resulting structures and the structural defects, particularly those encountered in the parts under study. Thirdly, the materials and experimental procedures of this work are described, followed by the results obtained, which are then discussed.The objective of this dissertation was to assess the structure of SLM processed components with a specific geometry, used in cable harness production for the automotive industry. These parts were then used to optimize the aging treatment conditions to maximize the mechanical response of SLM tensile test parts built in two different orientations.The parts exhibited vertical surfaces with high roughness and a very thin microstructure with few process-induced pores and a considerable amount of Ti-Al oxides, likely due to an excess of oxygen in the melt. These parts were cut into small samples for test aging treatments and the highest hardness condition (6 hours at 490 ºC) was chosen for the aging heat treatment of the tensile test samples. The tensile test samples yielded mechanical resistance similar to conventionally fabricated parts, although with considerably less ductility. No significant anisotropy was measured between specimens built with the major axis perpendicular or parallel to the powder bed.
520 $a Este trabalho de dissertacao em engenharia metalurgica e de materiais e parte de um projeto de investigacao mais vasto sobre fabrico aditivo de componentes para a industria automovel. O principal objetivo foi avaliar a resposta de componentes em aco Maraging C-300, produzidos por fabrico aditivo, a tratamentos termicos de envelhecimento. Com estes tratamentos procurou-se minimizar o tempo e temperaturas exigidos mantendo as propriedades dos componentes produzidos. Este trabalho comeca por introduzir o processamento de componentes metalicos por fabrico aditivo enfatizando as vantagens da sua implementacao na industria, mas tambem as suas limitacoes e desafios a superar, especialmente a reprodutibilidade de microestruturas e componentes. E tambem apresentado o processo de fabrico por laser em cama de po (SLM), destacando os mecanismos fisicos que controlam a fusao de metal por laser, as estruturas resultantes e os defeitos estruturais, particularmente os que foram encontrados nas pecas analisadas.Seguidamente, descrevem-se os materiais e o procedimento experimental e sao apresentados e discutidos os resultados obtidos. Foi caracterizada a microestrutura de componentes usados no fabrico de cabos para a industria automovel; desses componentes foram cortadas amostras para o teste das condicoes de tratamento termico de envelhecimento a serem aplicadas a provetes de tracao, os quais foram produzidos em duas direcoes diferentes e solicitados a tracao.As superficies verticais dos componentes exibiam uma maior rugosidade, tendo sido observada alguma porosidade e a presenca de oxidos de Ti-Al, provavelmente devido a um excesso de oxigenio no banho. Os componentes foram cortados em pequenas amostras que foram submetidas a tratamento termico. As condicoes associadas a maior dureza (6 horas a 490ºC) foram selecionadas para tratar os provetes de tracao que apresentaram uma resistencia mecanica semelhante a de materiais produzidos por processos convencionais, mas com menor ductilidade. Os provetes de tracao construidos com o eixo de solicitacao mecanica perpendicularmente a cama de po apresentaram resultados semelhantes aos produzidos com esse eixo paralelo a cama de po.
590 $a School code: 5896.
650 4 $a Metals. $3 601053
650 4 $a Mechanical properties. $3 3549505
650 4 $a Plasma. $3 877619
650 4 $a Solidification. $3 699781
650 4 $a Optimization. $3 891104
650 4 $a Heat. $3 573595
650 4 $a Energy. $3 876794
650 4 $a Laser sintering. $3 3462885
650 4 $a Microstructure. $3 555179
650 4 $a Radiation. $3 673904
650 4 $a Steel. $3 654173
650 4 $a Scanning electron microscopy. $3 551366
650 4 $a Raw materials. $3 648907
650 4 $a Cooling. $3 1457878
650 4 $a Rapid prototyping. $3 820011
650 4 $a Temperature. $3 711968
650 4 $a Satellites. $3 924316
650 4 $a Alloys. $3 654175
650 4 $a Geometry. $3 517251
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Analytical chemistry. $3 3168300
650 4 $a Biology. $3 522710
650 4 $a Chemistry. $3 516420
650 4 $a Engineering. $3 586835
650 4 $a Industrial engineering. $3 526216
650 4 $a Materials science. $3 543314
650 4 $a Mathematics. $3 515831
650 4 $a Mechanics. $3 525881
650 4 $a Physics. $3 516296
690 $a 0791
690 $a 0538
690 $a 0486
690 $a 0306
690 $a 0485
690 $a 0537
690 $a 0546
690 $a 0794
690 $a 0405
690 $a 0346
690 $a 0605
710 2 $a Universidade do Porto (Portugal). $3 3348738
773 0 $t Masters Abstracts International $g 84-01.
790 $a 5896
791 $a M.E.
792 $a 2019
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29139655