Processing of Cu-11.8Al-3.2Ni-3Mn-0,5Zr shape memory alloy by powder metallurgy

• Grant number: 16/00583-4
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2016
• End date: January 31, 2018
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Claudio Shyinti Kiminami
• Grantee: Dennis Balbino Gera
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 13/05987-8 - Processing and characterization of amorphous, metastable and nano-structured metallic alloys, AP.TEM

Abstract

The alloys with shape memory effect have the ability to recover its original shape after being deformed plastically. Technological applications of these alloys cover several areas such as medical, security and robotics. The most commonly used alloys are those based on Ni-Ti compound. However, these alloys are very reactive with oxygen and also present high termal and tension hysteresis. Moreover, the alloys based on Cu are advantageous in respect of NiTi alloys, due to the low cost of the alloy elements as the minor termal and tension hysteresis and also lower reactivity with oxygen. There are several manufacturing routes to process alloys with shape memory Cu-based leading to excellent mechanical properties, such as melting and rapid solidification. However, the powder metallurgy which represents an economical alternative is still few explored and has great potentialto produce parts with good mechanical and shape memory properties. Therefore, this study aimed to determine the viability of powder metallurgy route for the preparation of Cu based shape memory alloys, specifically Cu11.8Al-3.2Ni-3Mn-0,5Zr, in order to obtain proper microstructure and correlate it with the mechanical strength.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

GERA, DENNIS B.; SOYAMA, JULIANO; CAVA, REGIS D.; SPINELLI, JOSE E.; KIMINAMI, CLAUDIO S.. The Influence of Sintering Parameters in the Microstructure and Mechanical Properties of a Cu-Al-Ni-Mn-Zr Shape Memory Alloy. ADVANCED ENGINEERING MATERIALS, v. 20, n. 10, OCT 2018. (13/05987-8, 14/13037-2, 16/00583-4)

GERA, DENNIS; SANTOS, JONADABE; KIMINAMI, CLAUDIO S.; GARGARELLA, PITER. Comparison of Cu-Al-Ni-Mn-Zr shape memory alloy prepared by selective laser melting and conventional powder metallurgy. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, v. 30, n. 12, p. 3322-3332, DEC 2020. (17/27031-4, 13/05987-8, 16/00583-4)