Effect of Ti on Microstructure, Mechanical Properties and Corrosion Behavior of a Nickel-Aluminum Bronze Alloy

被引：6
作者：
Rivero, Pedro J. [1 ]
Berlanga, C. [1 ]
Palacio, J. F. [2 ]
Biezma-Moraleda, M. V. [3 ]
机构：
[1] Univ Publ Navarra, Dept Engn, Mat Engn Lab, Campus Arrosadia S-N, Pamplona 31006, Spain
[2] AIN, Ctr Adv Surface Engn, Pamplona 31191, Spain
[3] Univ Cantabria, Dept Earth Mat Sci & Engn, Santander 39004, Spain
来源：
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2021年 / 24卷 / 02期
关键词：
Nickel?aluminum bronze (NAB); microstructure; grain reinforcement; nanohardness; corrosion; NI-AL BRONZE; AS-CAST; TRIBOCORROSION BEHAVIOR; PROTECTIVE LAYER; SEAWATER; PERFORMANCE; PHASES; RESISTANCE; EVOLUTION; HARDNESS;
D O I：
10.1590/1980-5373-MR-2020-0335
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nickel-aluminum bronze (NAB) alloys are suitable, in cast condition, to be used in marine propellers due to its excellent behavior avoiding erosion and cavitation as well as corrosion. A complex microstructure, intrinsic to this copper base system, is the result of a well-controlled chemical composition. There are few works related to the effect of adding small quantities of specific chemical elements on NAB alloys properties. The aim of this paper is to study the effect of Ti on the microstructure, mechanical properties, and corrosion behavior of a particular NAB alloy, CuAl10Fe5Ni5 (C95500), and the comparison to the Ti-free NAB alloy. Although the as- cast microstructure is very similar for both materials, the addition of only 120 ppm Ti leads to a significant grain refinement that plays a key role on the mechanical properties. It has been observed an increase in both microhardness and nanohardness as well as in the resultant Young moduli values, meanwhile no significant impact on the corrosion susceptibility has been observed.
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页数：9
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