时效温度对00Cr12Ni10MoTi马氏体时效不锈钢组织与性能的影响

doi:10.11901/1005.3093.2019.151

材料研究学报

2019, Vol. 33

Issue (11): 815-823 DOI: 10.11901/1005.3093.2019.151

研究论文

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时效温度对00Cr12Ni10MoTi马氏体时效不锈钢组织与性能的影响

张洪林^1,²,马东平⁴,刘入杰^1,³,王太江⁴,徐斌¹,孙明月¹(

),李殿中¹,李依依¹,于辉³

1. 中国科学院金属研究所沈阳材料科学国家研究中心沈阳 110016
2. 中国科学技术大学材料科学与工程学院沈阳 110016
3. 燕山大学机械工程学院秦皇岛 066004
4. 中国空气动力研究与发展中心绵阳 621000

Effect of Aging Temperature on Microstructure and Properties of 00Cr12Ni10MoTi Maraging Stainless Steel

ZHANG Honglin^1,²,MA Dongping⁴,LIU Rujie^1,³,WANG Taijiang⁴,XU Bin¹,SUN Mingyue¹(

),LI Dianzhong¹,LI Yiyi¹,YU Hui³

1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang National Laboratory for Materials Science, Shenyang 110016, China
2. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
3. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China
4. China Aerodynamics Research and Development Center, Mianyang 621000, China

引用本文:

张洪林,马东平,刘入杰,王太江,徐斌,孙明月,李殿中,李依依,于辉. 时效温度对00Cr12Ni10MoTi马氏体时效不锈钢组织与性能的影响[J]. 材料研究学报, 2019, 33(11): 815-823.
Honglin ZHANG, Dongping MA, Rujie LIU, Taijiang WANG, Bin XU, Mingyue SUN, Dianzhong LI, Yiyi LI, Hui YU. Effect of Aging Temperature on Microstructure and Properties of 00Cr12Ni10MoTi Maraging Stainless Steel[J]. Chinese Journal of Materials Research, 2019, 33(11): 815-823.

全文: PDF(9414 KB) HTML

摘要:

使用X射线衍射(XRD)、扫描电镜(SEM)、电子背散射衍射(EBSD)、透射电镜(TEM)和拉伸和冲击实验等手段，研究了时效温度对00Cr12Ni10MoTi马氏体时效不锈钢的组织和力学性能的影响。结果表明：随着时效温度的升高，实验钢的强度逐渐提高，析出强化效应明显增强。在500℃时效后基体中析出大量棒状Ni₃Ti，实验钢的强度达到峰值。随着时效温度的升高，实验钢的室温和低温冲击韧性衰减，在400℃时效后低温(-196℃)冲击功出现最低值51 J。时效温度升高到500℃后，实验钢的冲击韧性回升，因为马氏体基体中生成的逆转变奥氏体抑制了裂纹萌生并缓解其扩展。在500℃时效产生了Ni₃Ti析出强化效应和逆变奥氏体韧化效应，使实验钢具有良好的强韧性匹配。

关键词 ：金属材料, 00Cr12Ni10MoTi, 微观组织, 时效强化, Ni₃Ti, 逆变奥氏体

Abstract：

The effect of aging temperature on the microstructure and mechanical properties of 00Cr12Ni10MoTi maraging stainless steel was investigated by means of X-ray diffractometer (XRD), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), tensile tester and impact tester. The results show that the strength increases gradually with the increase of aging temperature, through the enhanced precipitation strengthening. A large amount of rod-like Ni₃Ti precipitated on the matrix when aged at 500℃, which leads the strength of the steel to the peak value. The impact toughness at room temperature and low temperature decreases with the increase of aging temperature, and the lowest impact energy at low temperature (-196℃) is 51 J for the steel aged at 400℃, while the impact toughness of the steel increases again when aging temperature continues rising to 500℃, which is related to the formation of reversed austenite in martensite matrix. The existence of austenite phase can effectively inhibit crack initiation and relieve its propagation. Aging at 500℃ can effectively exert the precipitation strengthening effect of Ni₃Ti and the toughening effect of reversed austenite, achieving better matching of strength and toughness.

Key words： metallic materials 00Cr12Ni10MoTi microstructure aging strengthening Ni₃Ti reversed austenite

收稿日期: 2019-03-12

ZTFLH:

TG142.1

基金资助:国家重点研发计划(2016YFB0300401);国家自然科学基金(51774265);中国科学院创新交叉团队项目(ZDRW-CN-2017-1)

作者简介: 张洪林，男，1992年生，博士生

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	张洪林
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	徐斌
	孙明月
	李殿中
	李依依
	于辉
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https://www.cjmr.org/CN/10.11901/1005.3093.2019.151 或 https://www.cjmr.org/CN/Y2019/V33/I11/815

表1 实验用钢的化学成分

图1 时效温度对实验钢力学性能的影响

图2 时效温度不同的实验钢的低温冲击断口形貌

图3 固溶态和在不同温度时效试样的XRD图谱和奥氏体的体积分数

图4 00Cr12Ni10MoTi钢试样的微观组织

图5 不同状态实验钢的EBSD结果

图6 不同状态实验钢的TEM照片

图7 00Cr12Ni10MoTi钢的平衡相图

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