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| Effect of Solution Treatment on Mechanical Properties of a New Maraging Stainless Steel |
| LIU Zhenbao1,YANG Zhiyong1,YONG Qilong1,LIANG Jianxiong1,LUlun2 |
| 1. Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China； 2. Technical Center, Dongbei Special Steel Group, Fushun 113001, Liaoning, China |
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Abstract The effect of solution treatment on mechanical properties of a new stainless steel, CrNiCoMo maraging stainless steel was studied. The result shows that there are intermetallics in the steel solution treated at a temperature lower than 1050 ℃ with χ phase as the major phase. The intermetallics deteriorate toughness of the steel，and the strength of the steel is reduced by 100 MPa. There is lathy martensite of high density dislocation in the steel after 1050 ℃ solid solution treatment for one hour. By proper aging treatment, the strength of the steel may reach up to 1940 MPa,with a good combination of strength and toughness.
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Received: 01 January 1900
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2007, Vol. 42 
