Titel: Investiga��es dos par�metros de processo envolvidos no FSW de alum�nio (Portuguese Edition)
Verlag: Edicoes Nosso Conhecimento
Erscheinungsjahr: 2024
Sprache: Portugiesisch
ISBN-10: 6208067529
ISBN-13: 9786208067526
Einband: Softcover
Zustand: New

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Inhaltsangabe

As investiga��es experimentais de placas de alum�nio por dopagem de metais como o chumbo e o zinco por processo de difus�o em estado s�lido antes de serem unidas por soldadura por fric��o foram efectuadas com sucesso. O mesmo metal de soldadura e a mesma pe�a de trabalho n�o proporcionam uma melhor resist�ncia no ponto de soldadura. Assim, a alternativa � fazer a liga met�lica no ponto de soldadura. Com a ajuda da forma��o de ligas, obt�m-se uma melhor resist�ncia e melhora-se as propriedades do metal. O processo de dopagem ser� utilizado para melhorar as propriedades do metal, de modo a que o cord�o de soldadura d� a m�xima resist�ncia. Ap�s a realiza��o de v�rias experi�ncias experimentais, verificou-se que a amostra de alum�nio dopada com Pb (chumbo) e soldada com um perfil de ferramenta cil�ndrico d� o valor m�ximo de microdureza, bem como de resist�ncia � tra��o. No entanto, verifica-se uma redu��o dos valores de microdureza e de resist�ncia � tra��o se o alum�nio for dopado com zinco met�lico.

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