Microstructure characterization and corrosion behavior of hollow ZK60 Mg profile containing longitudinal welds

Straightening of impact damaged car panels is a common practice when damaged area is small to medium. Common car panel straightening methods are hammering, heating and welding pins and pulling on the material using a device called a spot weld puller, so that the straightened metal sheet may have, as a consequence, its microstructure, stress and strain state altered. The aim of this research was to find how the above methods alter the corrosion behavior of the alloy used for car panel manufacture. Samples from similar damaged car panels were obtained, straightened, tested and compared to a sample from an original panel. Testing implied microstructure characterization, surface wetting investigation and corrosion testing. It was concluded that when straightening is carried out by hammering and using the spot weld puller the worst corrosion behavior is to be expected.

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Microstructure characterization and corrosion behavior of Mg–Y–Zn alloys with different long period stacking ordered structures

Journal of Magnesium and Alloys ◽

10.1016/j.jma.2019.12.009 ◽

2020 ◽

Vol 8 (4) ◽

pp. 1208-1220

Author(s):

Lisha Wang ◽

Jinghua Jiang ◽

Huan Liu ◽

Bassiouny Saleh ◽

Aibin Ma

Keyword(s):

Corrosion Behavior ◽

Microstructure Characterization ◽

Ordered Structures ◽

Long Period ◽

Zn Alloys

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Microstructure characterization and electrochemical corrosion behavior of Zn and Zn/Mg alloys in H2SO4 solution

Journal of Central South University ◽

10.1007/s11771-015-2722-4 ◽

2015 ◽

Vol 22 (6) ◽

pp. 2007-2013

Author(s):

S. H. Ettefagh Far ◽

A. Rahimi ◽

M. Chaghazardi ◽

A. Davoodi

Keyword(s):

Corrosion Behavior ◽

Electrochemical Corrosion ◽

Microstructure Characterization ◽

Mg Alloys ◽

H2so4 Solution ◽

Electrochemical Corrosion Behavior

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Sem Studies of Co-Cr-Mo Surgical Implant Alloy Corrosion Behavior

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100055448 ◽

1982 ◽

Vol 40 ◽

pp. 520-521

Author(s):

Ann Chidester Van Orden ◽

John L. Chidester ◽

Anna C. Fraker ◽

Pei Sung

Keyword(s):

Electron Microscopy ◽

Corrosion Behavior ◽

Anodic Polarization ◽

Saline Solution ◽

Saturated Calomel Electrode ◽

Physiological Saline ◽

X Ray ◽

Physiological Saline Solution ◽

Scanning Electron

The influence of small variations in the composition on the corrosion behavior of Co-Cr-Mo alloys has been studied using scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDX), and electrochemical measurements. SEM and EDX data were correlated with data from in vitro corrosion measurements involving repassivation and also potentiostatic anodic polarization measurements. Specimens studied included the four alloys shown in Table 1. Corrosion tests were conducted in Hanks' physiological saline solution which has a pH of 7.4 and was held at a temperature of 37°C. Specimens were mechanically polished to a surface finish with 0.05 µm A1203, then exposed to the solution and anodically polarized at a rate of 0.006 v/min. All voltages were measured vs. the saturated calomel electrode (s.c.e.).. Specimens had breakdown potentials near 0.47V vs. s.c.e.

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