Corrosion behavior of selective laser melted Ti-6Al-4V alloy in NaCl solution

被引：456

作者：

Dai, Nianwei ^{[1
]}

Zhang, Lai-Chang ^{[2
]}

Zhang, Junxi ^{[1
]}

Chen, Qimeng ^{[1
]}

Wu, Maoliang ^{[1
]}

机构：

[1] Shanghai Univ Elect Power, Shanghai Key Lab Mat Protect & Adv Mat Elect Powe, Shanghai 200090, Peoples R China

[2] Edith Cowan Univ, Sch Engn, Perth, WA 6027, Australia

来源：

CORROSION SCIENCE | 2016年 / 102卷

基金：

澳大利亚研究理事会;

关键词：

Titanium; EIS; X-ray diffraction; Polarization; Passive films; MECHANICAL-BEHAVIOR; TITANIUM-ALLOYS; NITRIDED TI-6AL-4V; DENTAL IMPLANT; TI; MICROSTRUCTURE; RESISTANCE; MANUFACTURE; TI6AL4V; FILMS;

D O I：

10.1016/j.corsci.2015.10.041

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Electrochemical measurements were performed to investigate the corrosion behavior of Ti-6Al-4V alloy prepared by selective laser melting (SLM) and commercial Grade 5 sample for comparison. Electrochemical results showed that the SLM-produced sample possesses poorer corrosion resistance than the Grade 5 sample. Microstructure studies suggested that the SLM-produced sample is composed of dominant acicular alpha' martensite and some prior beta grains, unlike the typical alpha+beta microstructure in Grade 5 sample. The unfavorable corrosion resistance of the SLM-produced sample is related to the considerably large amount of acicular alpha' and less beta-Ti phase in the microstructure compared to the Grade 5 sample. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：484 / 489

页数：6

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