[Oral Presentation]微米硅颗粒与纳米弥散相对形变铝硅基合金的协同强韧化

Organized By

Hohai University

Monash University

Co-organized by

Southeast University

Jiangxi University of Science and Technology

Northeast University

DUT-BSU Scientific Research and Innovation Center

Suzhou University of Science and Technology

State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment

Sponsoring agency

KELI SDEM Software (Dalian) Co., Ltd.

Sugon Smart Computing Information Technology Co., Ltd.

Beijing Paratera Technology Co., Ltd.

Simpop Information Technology Co., Ltd.

Important Dates

Conference Announcement

December 2023, release First Round Announcement
Abstract Submission Deadline
March 31^th, 2024
Paper Submission Deadline
April 30^th, 2024
Registration
From January 1^st, 2024
Conference Schedule
May 31^st (Friday), 2024 On-Site Registration
June 1^st to 3^rd, 2024 Conference

微米硅颗粒与纳米弥散相对形变铝硅基合金的协同强韧化

ID：203 Submission ID：342 View Protection：ATTENDEE Updated Time：2024-04-30 10:27:43 Hits：437 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

Session：[No Session] » [No Session Block]

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Abstract

二次相颗粒极大地影响合金变形过程的显微组织演变，进而改变合金性能。本文以近共晶Al-Si基合金为研究对象，通过Zr/Ti/V微合金化和形变热处理探究微米硅颗粒和纳米弥散沉淀相对铝基体热变形过程中再结晶形核与长大的作用机理；并结合热挤压工艺制备高性能铝硅基铝型材。结果表明，热变形过程中，微米Si颗粒周围聚集高密度的几何必须位错，为再结晶的爆炸式形核提供基底与驱动力；弥散分布的纳米沉淀相粒子在动态再结晶过程起到了双重作用。经0.1wt.%Zr和0.1wt.%V复合微合金化后，挤压态近共晶Al-Si-Mg合金的抗拉强度提升近40%，屈服强度提升70%以上，伸长率保持在10%；经0.1wt%Ti微合金化后，挤压态Al-12.5wt.%Si-0.5wt.%Mg-0.1wt.%Ti合金的抗拉强度、屈服强度和伸长率分别达到296MPa、193MPa和12.3%。本研究为开发Al-Si基型材合金奠定理论和实验基础。

Keywords

Al-Si,二次相颗粒,弥散相,强韧化,动态再结晶

Speaker

吴玉娜

河海大学

Submission Author

吴玉娜河海大学

袁婷常数理工学院

宋丹东南大学

江静华河海大学

马爱斌河海大学

Sponsored By

Hohai University

Panel of Computational Mechanics on Granular Materials, Working Party of Computational Mechanics, Chinese Society of Theoretical and Applied Mechanics

Jiangsu Society of Theoretical and Applied Mechanics