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首页> 外文期刊>Materials Science and Engineering >Experimental verification of tailor welded joining partners for hot stamping and analytical modeling of TWBs rheological constitutive in austenitic state
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Experimental verification of tailor welded joining partners for hot stamping and analytical modeling of TWBs rheological constitutive in austenitic state

机译：奥氏体状态下TWBs流变本构的热冲压定制焊接连接伙伴的实验验证和分析建模

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摘要

Hot stamping of quenchable ultra high strength steels currently represents a standard forming technology in the automotive industry for the manufacture of safety and crash relevant components. Recently, hot stamping of Tailor-Welded Blanks (TWBs) is proposed to meet the environmental and safety requirements by supplying car structural body components with functionally optimized and tailored mechanical properties. In this paper, an appropriate partner material for the quenchenable boron steel B1500HS based on the phase transformation and deformation behavior under process relevant conditions is determined. It is generally accepted that the mechanical properties for joint partner after quenching process should meet the following requirements. The value of yield strength (YS) should be between 350 and 500 MPa. The ultimate tensile strength (UTS) should be within the limits of 500-650 MPa, and the total elongation (TEL) until rupture should be higher than 13%. Two kinds of High Strength Low Alloy (HSLA) cold rolled steels B340LA and B410LA are chosen for verification of which one is appropriate as joint partner. Microhardness is measured and metallographic is investigated on different base materials and corresponding weld seams. It is pointed out that the B340LA steel is an appropriate joint partner with ideal thermal and mechanical properties. An optimized Arrhenius constitutive law is implemented to improve the characterization and description of the mechanical properties of the base and joint partner, as well as the weld seam in austenitic state. The comparisons with simplified Hensel-Spittel constitutive model show the optimized Arrhenius constitutive law describes the experimental data fairly well.
机译：可淬火的超高强度钢的热冲压目前代表着汽车工业中用于制造安全和碰撞相关部件的标准成型技术。近来，提出了通过给汽车结构主体部件提供功能上优化和定制的机械性能来满足环境和安全要求的定制焊接坯件（TWB）的热冲压技术。本文根据工艺相关条件下的相变和变形行为，确定了可淬火硼钢B1500HS的合适伙伴材料。通常认为，淬火后接头的机械性能应满足以下要求。屈服强度（YS）的值应在350至500 MPa之间。极限抗拉强度（UTS）应在500-650 MPa的范围内，直至断裂的总伸长率（TEL）应高于13％。选择两种高强度低合金（HSLA）冷轧钢B340LA和B410LA进行验证，其中一种适合作为联合搭档。在不同的基材和相应的焊缝上测量显微硬度并研究金相。需要指出的是，B340LA钢是具有理想热和机械性能的合适接头。实施了优化的Arrhenius本构定律，以改进对基体和接头搭接件以及奥氏体状态焊缝的机械性能的表征和描述。与简化的Hensel-Spittel本构模型的比较表明，优化的Arrhenius本构定律很好地描述了实验数据。

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  • 来源
    《Materials Science and Engineering》 |2013年第15期|304-318|共15页
  • 作者

    Bingtao Tang; Zhengjun Yuan; Gang Cheng; Lili Huang; Wei Zheng; Hui Xie;

  • 作者单位

    School of Materials Science and Engineering, Shandong Jianzhu University, Shandong, Jinan 250101, China,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Hunan, Changsha 410082, China;

    School of Mechanical and Electronic Engineering, Shandong Jianzhu University, Jinan 250101, China;

    School of Mechanical and Electronic Engineering, Shandong Jianzhu University, Jinan 250101, China;

    School of Materials Science and Engineering, Shandong Jianzhu University, Shandong, Jinan 250101, China;

    School of Materials Science and Engineering, Shandong Jianzhu University, Shandong, Jinan 250101, China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Hunan, Changsha 410082, China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Hot stamping; TWBs; Boron steel; Constitutive law; Tailored mechanical property;

    机译：烫金;TWBs;硼钢宪法量身定制的机械性能;

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