TY - CHAP

T1 - Effect of Deformation Speed on Stress Corrosion and Fracture Toughness of Extruded Mg10Dy and Mg10Dy1Nd Using C-Ring Tests

AU - Maier, Petra

AU - Pamidi, Easwar

AU - Clausius, Benjamin

AU - Hort, Norbert

N1 - Conference code: 152

PY - 2023/2/20

Y1 - 2023/2/20

N2 - The influence of the deformation speed in C-ring tests in Ringer's solution on crack initiation and propagation of extruded Mg10Dy and Mg10Dy1Nd is investigated. Deformation speeds varying from 2 to 0.012 mm/min allow corrosion times from a few minutes to hours. Both the crack initiation force (higher for Mg10Dy1Nd) and displacement (higher for Mg10Dy) increase with decreasing deformation speed up to a corrosion time of 1 h and then decrease, more for Mg10Dy1Nd and slightly more for the displacement compared to the force at higher corrosion times. The decrease is associated with the higher corrosion times—corrosion pits become visible at a test time of 1 h on the tensile side. In Mg10Dy1Nd the fracture toughness increases with decreasing deformation speed, and no clear picture is seen for Mg10Dy. Sub-cracks often initiate at corrosion pits, which show a correlation to twinned grains at the tensile side—increasing fracture toughness.

AB - The influence of the deformation speed in C-ring tests in Ringer's solution on crack initiation and propagation of extruded Mg10Dy and Mg10Dy1Nd is investigated. Deformation speeds varying from 2 to 0.012 mm/min allow corrosion times from a few minutes to hours. Both the crack initiation force (higher for Mg10Dy1Nd) and displacement (higher for Mg10Dy) increase with decreasing deformation speed up to a corrosion time of 1 h and then decrease, more for Mg10Dy1Nd and slightly more for the displacement compared to the force at higher corrosion times. The decrease is associated with the higher corrosion times—corrosion pits become visible at a test time of 1 h on the tensile side. In Mg10Dy1Nd the fracture toughness increases with decreasing deformation speed, and no clear picture is seen for Mg10Dy. Sub-cracks often initiate at corrosion pits, which show a correlation to twinned grains at the tensile side—increasing fracture toughness.

KW - Engineering

KW - C-ring tests

KW - Crack propagation

KW - Fracture toughness

KW - Magnesium

UR - https://www.mendeley.com/catalogue/b27ac46a-6335-3bbb-b5cc-65ce3153ac82/

UR - http://www.scopus.com/inward/record.url?scp=85159466377&partnerID=8YFLogxK

U2 - 10.1007/978-3-031-22645-8_17

DO - 10.1007/978-3-031-22645-8_17

M3 - Article in conference proceedings

SN - 978-3-031-22644-1

SN - 978-3-031-22647-2

T3 - The Minerals, Metals & Materials Series

SP - 73

EP - 80

BT - Magnesium Technology 2023

A2 - Barela, Steven

A2 - Leonard, Aeriel

A2 - Maier, Petra

A2 - Neelameggham, Neale R.

A2 - Miller, Victoria M

PB - Springer Schweiz

CY - Cham

T2 - 152nd TMS Annual Meeting and Exhibition

Y2 - 19 March 2023 through 23 March 2023

ER -