Lifei Wang
서울대학교 재료공학과 · 재료과학
Lifei Wang 교수의 연구실은 마그네슘 합금의 기계적 거동과 가공성 향상을 핵심으로 하며, 특히 저온에서의 연성 저하 문제를 해결하기 위한 텍스처 제어 및 나노구조 제어 기법을 연구하고 있습니다. 마그네슘 합금의 비가역적 변형 거동, 비틀림 및 미세구조 변화, 그리고 부식 거동에 대한 기계적 거동 분석을 통해 의료용 생분해성 소재와 고강도 구조재로의 응용 가능성을 모색하고 있습니다. 특히, 너비 제한 롤링과 같은 신규 가공 공정 개발을 통해 표면 균열을 억제하고, 미세구조 제어를 통한 기계적 성질 향상을 추구하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Current research seems to underscore the impact of parental expectations on college students’ psychological distress. This study examined whether parental expectations or living up to parental expectations served as better predictors on Taiwanese college students’ psychological distress. Study 1 developed and validated a scale for measuring parental expectations and living up to parental expectations. Results supported the factorial validity and reliability of the scale. The results of Study 2 s
Magnesium (Mg) single crystal specimens with three different orientations were prepared and tested from room temperature to 733 K in order to systematically evaluate effects of temperature on the critical resolved shear stress (CRSS) of slips and twinning in Mg single crystals. The duplex non-basal <a> slip took place in the temperature range from 613 to 733 K when the single crystal samples were stretched along the <01¯10> direction. In contrast, the single basal <a> slip and prismatic <a> slip
To suppress the edge crack of the magnesium alloy sheet during the ordinary rolling process, a new rolling process named width-limited rolling was proposed in this paper. Width-limited rolling is a rolling method in which the width of the alloy sheet is limited by modifying the shape of the rollers, allowing a compressive stress field to form at the edge portion of the alloy sheet during rolling, resulting in the reduction of edge cracks. At present work, magnesium alloy sheets were separately s
Owing to the hexagonal close-packed (HCP) crystal structure of magnesium alloys, they are characterized by poor plasticity at low temperatures (below recrystallization temperature), which limits their application. Texture control has been proven to be an effective way to enhance the ductility, formability, processability, and so on. Various technologies, which can be classified as alloying elements, induced shear deformation, pre-twins, and recrystallization, have been developed to modify the ba
Magnesium (Mg) alloys have received increasing interest in the past two decades as biomaterials due to their excellent biological compatibility. However, the corrosion resistance of Mg alloys is relativity low which limits their usage in degradable implant applications, and controlling the corrosion resistance is the key to solving this problem. This review discusses the relative corrosion mechanisms, including pitting, filiform, high temperature, stress corrosion, etc., of Mg alloys. Various ap
