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5篇 您的检索式:作者名="Han Sam Cho"
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1An investigation of the microstructural effects on the mechanical and electrochemical properties of a friction stir processed equiatomic CrMnFeCoNi high entropy alloy显示文摘The electrochemical properties of a friction stir processed(FSPed)equiatomic CrMnFeCoNi high-entropy alloy(HEA)was investigated in an aerated 0.5 M Na_(2)SO_(4) electrolyte solution at room temperature.The microstructural analysis reveals a highly refined stir zone(SZ)with an average grain size that decreases from the top region of the SZ to the bottom region of the SZ(also known as shear-processed zone;SPZ).However,the region below the SPZ,(i.e.below the plunge depth)experienced an increase in average grain size and dislocation densities compared to the other regions.There is no secondary phase observed in the FSPed region,however,the microstructural evolution in the FSPed region affects the electrochemical behavior of the HEA.Cr_(2)O_(3) passive layer was observed to form on the FSPed HEA,leading to excellent corrosion properties from the polarization corrosion tests.Grain refinement in the SZ enhances the rapid formation of the passive layer,thus,leading to better corrosion properties in the front surface of the FSPed HEA.The localized corrosion behavior of the FSPed HEA was predicted to be caused by the micro-galvanic nature of the HEA,which leads to an increase in polarization at the anodic sites(pits).A numerical model was established using the corrosion parameters from the experiment to simulate the localized corrosion behavior on the surface of the FSPed HEA in a neutral environment.The predicted initial pitting potential and corresponding current density agree well with the experimental results.The model is also capable of tracking the dissolution of the pits over longer periods.Sam Yaw Anaman Solomon Ansah Hoon-Hwe Cho Min-Gu Jo Jin-Yoo Suh Minjung Kang Jong-Sook Lee Sung-Tae Hong Heung Nam Han 2021Journal of Materials Science & Technology2021,,28:2
2Evaluation of combination effects of installation damage and creep behavior on long-term design strength of geogrids显示文摘Sam Deok Cho Kwang Wu Lee Daniele A. Cazzuffi Han Yong Jeon 2006Polymer Testing2006,,6:1
3Laparoscopic Surgery of Ectopic Gestational Sac Implanted in the Cesarean Section Scar显示文摘Jung Han Lee Seong Hee Kim Sam Hyun Cho 2008Surg Laparosc Endosc Percutan Tech2008,18,5:1
4Hemodynamics‐compliant reconstruction of the right hepatic vein for adult living donor liver transplantation with a right liver graft显示文摘Shin Hwang Tae‐Yong Ha Chul‐Soo Ahn Deok‐Bog Moon Gi‐Won Song Ki‐Hun Kim Dong‐Hwan Jung Gil‐Chun Park Kyu‐Bo Sung Gi‐Young Ko Kyoung Won Kim Byungchul Cho Jung‐Man Namgoong Sung‐Won Jung Sam‐Youl Yoon Chun‐Soo Park Yo‐Han Park Hyeong‐Woo Park Hyo‐Jun Lee 2012Liver Transpl2012,,7:1
5Magnetic field analysis of 2-D permanent magnet array for planar motor显示文摘Han Sam Cho Chang Hwan Ira Hyun Kyo Jung 2001IEEE Transactions on Magnetics2001,37,5:1
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