Transactions of Materials and Heat Treatment

Title：Rheology law of ultra-high strength boron steels in austenitic state

Authors： YUAN Zheng-jun TANG Bing-tao GENG Zong-liang WANG Lan-cheng ZHANG Guan-yao

Unit： Shandong Jianzhu University

KeyWords： ultra-high strength boron steels rheology law austenitic

ClassificationCode：TG115

year,vol(issue):pagenumber：2012,37(4):148-152

Abstract：

Tensile experiments at constant high temperature were carried out for hot stamping of boron steels B1500HS on the test machine Gleeble-1500 to get stress-strain curves. The deformation behavior of hot stamping of boron steels B1500HS was investigated. The influence of deformation temperature and strain rate on flow characteristic was analyzed. The difference among Hansel-Spittel rheology law, Noron-Hoff rheology law and experimental data was compared and investigated. In order to overcome the shortcomings of Hansel-Spittel rheology law, the simplified Hansel-Spittel rheology law was proposed, which can help precisely describe the flow characteristic of boron steels B1500HS in austenitic state.

Funds：

国家自然科学基金资助项目（51005137/51175302）；中国博士后特别资助项目（201104585）；山东省自然科学基金资助项目（ZR2010EQ025）

原政军（1965-）男，专科，实验师；通信作者：唐炳涛

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