Transactions of Materials and Heat Treatment

Title：Cold bending and welding performance on PCT980D steel thin plate for car seat slides

Authors： Zhao Zhuoshuai1 Jiang Xuefeng1 Yang Mingkun1 Li Xin1 Wang Fei1 Wei Ning2 Cheng Wangjun2

Unit： 1. Changchun FAWAY Adient Automotive Metal Components Co. Ltd. 2. Xinjiang University

KeyWords： PCT980D steel seat slide welding property bending property forming limit diagram

ClassificationCode：TG142.24

year,vol(issue):pagenumber：2023,48(11):54-59

Abstract：

The feasibility of applying PCT980D sheet for POSCO steel on car seat slides with a material thickness of 1.4 mm was studied. Then, combined with the usage characteristics and requirements of car seat slides, the microstructure, mechanical property, bending property and welding property of PCT980D steel sheet with a material thickness of 1.4 mm were studied in depth, and the forming limit diagram （FLD） of PCT980D steel was drawn for the optimization of the stamping process. The results show that PCT980D steel is an ultra-high strength dual-phase steel with a microstructure composed of martensite and bainite. Also, it has good comprehensive mechanical properties, with a yield strength greater than 850 MPa, a tensile strength greater than 1000 MPa and an elongation greater than 10%. At the same time, it can also meet the bending and welding properties required for the design and manufacturing of slide.

Funds：

新疆维吾尔自治区自然科学基金资助项目（2022D-01C653）；太原理工大学横向项目（202207140007）；新疆维吾尔自治区“天池英才”高层次人才项目（51052300536）

作者简介：赵卓帅（1987-），男，硕士，工程师，E-mail：zhaozhuoshuai.ok@163.com

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