铸态316LN钢平面压缩过程中的组织演变模拟
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摘要
应用Deform-3D软件对铸态316LN奥氏体不锈钢平面压缩过程进行了数值模拟,研究了不同变形温度、不同压下量的铸态316LN组织演变规律。结果表明,当变形温度一定时,随着压下量的增加,动态再结晶体积分数增加,晶粒尺寸细化。当变形温度较低时,随着压下量增加,材料的晶粒变小,但仍以原始粗大晶粒为主。当变形温度升高时,再结晶程度增大,晶粒更容易得到细化。在1200℃时,较小的变形量下就可以获得细小的晶粒。
The plane compression process of as-cast 316 LN austenitic stainless steel was numerically simulated by using Deform-3 D software. The microstructure evolution of as-cast 316 LN with different deformation temperature and different reduction was studied. The results show that when the deformation temperature is constant, the dynamic recrystallization volume fraction increases and the grain size is refined with the increase of reduction amount. When the deformation temperature is low, with the increase of reduction amount, the grain size of the material becomes smaller, but it is still dominated by the original coarse grain. When the deformation temperature increases, the recrystallization degree increases and the grain is more easily refined. At 1200 ℃, fine grains can be obtained with a small amount of deformation.
The plane compression process of as-cast 316 LN austenitic stainless steel was numerically simulated by using Deform-3 D software. The microstructure evolution of as-cast 316 LN with different deformation temperature and different reduction was studied. The results show that when the deformation temperature is constant, the dynamic recrystallization volume fraction increases and the grain size is refined with the increase of reduction amount. When the deformation temperature is low, with the increase of reduction amount, the grain size of the material becomes smaller, but it is still dominated by the original coarse grain. When the deformation temperature increases, the recrystallization degree increases and the grain is more easily refined. At 1200 ℃, fine grains can be obtained with a small amount of deformation.
引文
[1] Byun T S,Lee E H, Hunn J D. Plastic deformation in 316LN stainless steel-characterization of deformation microstructures[J]. Journal of Nuclear Materials, 2003, 321(1):29-39.
[2]陈慧琴.316LN钢大锻件锻造晶粒控制方法:ZL201010577477.8[P].2013-08-21.
[3]陈明明,何文武,刘艳光,等.316LN奥氏体不锈钢亚动态再结晶行为的研究[J].锻压装备与制造技术,2010,45(4):83-86.
[4] Zhang Xiuzhi, Zhang Yishuai, Li Yingjie,et al. Cracking initiation mechanism of 316LN stainless steel in the process of the hot deformation[J]. Materials Sciences&Engineering A, 2013,559(1):301-306.
[5]段兴旺,刘建生.316LN钢高温塑性及其断口特征[J].吉林大学学报(工学版),2015,45(2):494-500.
[6] Duan Xingwang. Microstructure evolution of multi-heat forging and numerical simulation for 316LN steel[J]. Research Journal of Applied Sciences, Engineering and Technology, 2014, 7(5):1012-1016.
[7]段兴旺,刘建生.应力三轴度对316LN钢临界损伤值的影响[J].塑性工程学报,2014,21(3):128-131.
[8]段兴旺,刘建生.应力状态对316LN钢高温塑性影响的研究[J].北京工业大学学报,2014,40(3):460-465.
[9] Duan X W, Liu J S. Research on damage evolution and damage model of 316LN steel during forging[J]. Materials Science and Engineering A, 2013, 588(12):265-271.
[10] Zhang Wenhui, Sun Shuhua, Zhao Deli, et al. Hot deformation behavior of a Nb-containing 316LN stainless steel[J]. Materials and Design, 2011, 32(8/9):4173-4179.
[11]潘品李,钟约先,马庆贤,等.核电主管道用钢316LN高温变形性能研究[J].中国机械工程,2012,23(11):1354-1359.
[2]陈慧琴.316LN钢大锻件锻造晶粒控制方法:ZL201010577477.8[P].2013-08-21.
[3]陈明明,何文武,刘艳光,等.316LN奥氏体不锈钢亚动态再结晶行为的研究[J].锻压装备与制造技术,2010,45(4):83-86.
[4] Zhang Xiuzhi, Zhang Yishuai, Li Yingjie,et al. Cracking initiation mechanism of 316LN stainless steel in the process of the hot deformation[J]. Materials Sciences&Engineering A, 2013,559(1):301-306.
[5]段兴旺,刘建生.316LN钢高温塑性及其断口特征[J].吉林大学学报(工学版),2015,45(2):494-500.
[6] Duan Xingwang. Microstructure evolution of multi-heat forging and numerical simulation for 316LN steel[J]. Research Journal of Applied Sciences, Engineering and Technology, 2014, 7(5):1012-1016.
[7]段兴旺,刘建生.应力三轴度对316LN钢临界损伤值的影响[J].塑性工程学报,2014,21(3):128-131.
[8]段兴旺,刘建生.应力状态对316LN钢高温塑性影响的研究[J].北京工业大学学报,2014,40(3):460-465.
[9] Duan X W, Liu J S. Research on damage evolution and damage model of 316LN steel during forging[J]. Materials Science and Engineering A, 2013, 588(12):265-271.
[10] Zhang Wenhui, Sun Shuhua, Zhao Deli, et al. Hot deformation behavior of a Nb-containing 316LN stainless steel[J]. Materials and Design, 2011, 32(8/9):4173-4179.
[11]潘品李,钟约先,马庆贤,等.核电主管道用钢316LN高温变形性能研究[J].中国机械工程,2012,23(11):1354-1359.