Transactions of Materials and Heat Treatment

Title：Research on hot forming process of Mn18Cr18 high nitrogen steel

Authors： ZHANG Jin1 LI Jing-yuan1 2 WANG Yi-de2 REN Xue-ping1 WANG Hui-mian2 LI Zhi-bin2(1.School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China 2.Taiyuan Iron and Steel(Group) Company Ltd. Taiyuan 030003 Chi

Unit：

KeyWords： high nitrogen steel hot plasticity hot forging hot rolling

ClassificationCode：TG142.15

year,vol(issue):pagenumber：2009,34(1):10-13

Abstract：

The hot plasticity of Mn18Cr18 high nitrogen steel was studied by thermal simulated test,and the hot forging and hot rolling tests of the steel were carried out subsequently.The results show that the hot plasticity of Mn18Cr18 high nitrogen steel varies with a "V" shape.It exhibits a dip plasticity value with φ=20%~30% when the deformation temperature is between 1000 and 1100 ℃,and the pieces crack during the forging punching tests in this temperature region.In the contrast,the steel exhibits a peak plasticity value with φ=60%~70% between 1150 and 1200 ℃,in addition,low deformation resistance can be obtained in this temperature region.Mechanical properties of the small retaining ring forging scaled down in 5∶1 was complied with the standard of JB/T 7030-2002.The ductility of the forgings was much better than the plate for the multiple forging process.

Funds：

山西省自然科学基金资助项目(2008011047)

Reference：

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