闫红红,胡勇,李永堂

• 1:太原科技大学机械工程学院
• 2:金属材料成形理论与技术山西省重点实验室
• 3:太原科技大学材料科学与工程学院

摘要(Abstract)：

基于铸辗复合成形工艺,研究了铸态30Mn钢在变形温度为950~1150℃,应变速率为0.1、0.5和1 s-1时的热压缩变形中的动态再结晶行为。结果表明,在不同应变速率条件下,当形变温度高于1000℃时,所有试样都能发生动态再结晶。铸态30Mn钢动态再结晶激活能为305.83 k J/mol;临界应变与峰值应变的比值为0.57,临界应力与峰值应力的比值为0.90;分别建立了动态再结晶体积分数和平均晶粒尺寸模型;分析了不同变形条件的显微组织。

关键词(KeyWords)： 铸态30Mn钢;热变形;动态再结晶

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点(51135007);国家自然科学基金(51405325,51305289);; 高等学校科技创新项目(2014144)

作者(Author): 闫红红,胡勇,李永堂

DOI: 10.13289/j.issn.1009-6264.2016.08.036

参考文献(References)：

• [1]利俊峰.中国风电发展报告2011[M].北京:中国环境科学出版社,2011.
• [2]Li Y T,Ju L,Qi H P.Technology and experiments of 42Cr Mo bearing ring forming based on casting ring blank[J].Chinese Journal of Mechancical Engineering,2013,6(26):1-10.
• [3]Mirzadeh H,Najafizadeh A.Prediction of the critical conditions for initiation of dynamic recrystallization[J].Materials&Design,2010,31(3):1174-1179.
• [4]Yan T,Yu E L,Zhao Y Q.Modeling of hot deformation behavior of 55Si Mn Mo medium-carbon steel[J].Journal of Iron and Steel Research International,2013,20(11):125-130.
• [5]Quan G Z,Li G S,Chen T,et al.Dynamic recrystallization kinetics of 42Cr Mo steel during compression at different temperatures and strain rates[J].Materials Science and Engineering A,2011,528(13/14):4643-4651.
• [6]Mc Queen H J,Ryan N D.Constitutive analysis in hot working[J].Material Science and Engineering A,2002,322:43-63.
• [7]Li X C,Duan L L,Li J W,et al.Experimental study and numerical simulation of dynamic recrystallization behavior of a micro-alloyed plastic mold steel[J].Materials&Design,2015,66:309-320.
• [8]欧阳德来,鲁世强,崔霞,等.应用加工硬化率研究TA15钛合金β区变形的动态再结晶临界条件[J].航空材料学报,2010,30(02):17-23.OUYANG De-lai,LU Shi-qiang,CUI Xia,et al.Study on critical strains of dynamic recrystallization during process in TA15 titanium alloy using working hardening rate[J].Journal of Aeronautical Materials,2010,30(2):18-23.
• [9]Poliak E I,Jonas J J.A one-parameter approach to determining the critical conditions for the initiation of dynamic recrystallization[J].Acta Mater,1996,44(1):127-136.
• [10]苏娟华,杨哲,贾淑果,等.利用加工硬化率方法研究Cu-Cr-Sn-Zn-Ce合金的动态再结晶[J].材料热处理学报,2013,34(11):104-108.SU Juan-hua,YANG Zhe,JIA Shu-guo,et al.Characterization of dynamic recrystallization behavior of a Cu-Cr-Sn-Zn-Ce alloy by work hardening rate method[J].Transactions of Materials and Heat Treatment,2013,34(11):104-108.
• [11]欧阳德来,鲁世强,黄旭,等.TA15钛合金β区变形动态再结晶的临界条件[J].中国有色金属学报,2010,20(8):1539-1544.OUYANG De-lai,LU Shi-qiang,HUANG Xu,et al.Critical conditions of dynamic recrystallization during deformation ofβarea in TA15 titanium alloy[J].The Chinese Journal of Nonferrous Metals,2010,20(8):1539-1544.
• [12]Kim S I,Yoo Y C.Dynamic recrystallization behavior of AISI 304 stainless steel[J].Materials Science and Engineering A,2001,311:108-113.
• [13]Mirzadeh H,Najafizadeh A.Hot deformation and dynamic recrystallization of 17-4 PH stainless steel[J].ISIJ International,2013,53(4):680-689.

文章评论(Comment)：