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| Research development of precipitation behavior of ultra high strength stainless steels |
| ZHANG Chao1,2，SU Jie1，LIANG Jian-xiong1，LIU Zhen-bao1，GE Qi-lu3 |
（1. Institute for Special Steels， Central Iron and Steel Research Institute， Beijing 100081， China
2. School of Metallurgy and Materials Engineering， Jiangsu University of Science and Technology， Zhangjiagang 215600， Jiangsu，China
3. Human Resources Department， China Iron and Steel Research Institute Group， Beijing 100081， China） |
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Abstract Ultra high strength（UHS） stainless steels have been widely demanded because of high strength，good toughness and excellent corrosion resistant. Precipitation hardening plays an important role in possessing high strength of the steels，but the complex precipitation process and unclear mechanism are the key factors to limit the exploitation of new UHS stainless steels. The classifications，marks，compositions and mechanical properties of UHS stainless steels were introduced. The evolution of precipitations and reinforcement mechanism research of martensitic UHS stainless steels were summarized. The significant directions of development of UHS stainless steels as computational materials science，strengthening theory and resource saving technology were pointed out.
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Received: 07 September 2017
Published: 09 April 2018
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2018, Vol. 53 
