| 44Si2CrV 钢弹簧弹性减退机理的研究 |
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| 引用本文： | 刘德富,徐德祥. 44Si2CrV 钢弹簧弹性减退机理的研究[J]. 特殊钢, 2007, 28(2): 4-6 |
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| 作者姓名： | 刘德富 徐德祥 |
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| 作者单位： | 东北特殊钢集团有限责任公司，大连116031 |
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| 摘 要： | 研究了影响44Si2CrV钢弹簧在低于屈服强度的应力下长时间加载引起自由高度变化的因素。结果表明，44Si2CrV钢弹簧在900 MPa 的应力下压缩72 h,自由高度的缩短由两部分组成：表面脱碳层的塑性变形，造成对内部材料的牵制而使部分弹性变形不能恢复，由此所造成的弹簧自由高度缩短占总变形量的84%;钢的室温蠕变，占自由高度缩短的16%。
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| 关 键 词： | 44Si2CrV弹簧钢 脱碳 弹性减退 室温蠕变 |
| 收稿时间： | 2006-10-08 |
| 修稿时间： | 2006-10-08 |
Study on Mechanism of Elasticity Attenuation of Steel 44Si2CrV Spring |
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| Liu Defu,Xu Dexiang. Study on Mechanism of Elasticity Attenuation of Steel 44Si2CrV Spring[J]. Special Steel, 2007, 28(2): 4-6 |
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| Authors: | Liu Defu Xu Dexiang |
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| Affiliation: | Dongbei Special Steel Group Co Ltd,Dalian 116031 |
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| Abstract: | The factors to effect change of free height of steel 44Si2CrV spring during long time loading for 72 h under stress to be lower than yield strength of steel has been studied. The results show that the reduction of free height of steel 44Si2CrV spring under compressive stress 900 MPa consists of two parts: plastic deformation of surface decarburized zone to hinder elastically deformed internal material recovering, making up 84% of total reduction of free height and creep of steel at ambient temperature making up 16% of total reduction of free height. |
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| Keywords: | Spring Steel 44Si2CrV Decarburization Elasticity Resistance Creep at Ambient Temperature |
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