| 喷吹工艺对GCr15轴承钢K_(1c)和ΔK_(th)的影响及裂纹尺寸的估算 |
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| 引用本文： | 郑淑玲,张兰萍. 喷吹工艺对GCr15轴承钢K_(1c)和ΔK_(th)的影响及裂纹尺寸的估算[J]. 煤炭技术, 2002, 21(9): 58-59 |
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| 作者姓名： | 郑淑玲 张兰萍 |
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| 作者单位： | 鸡西大学,黑龙江,鸡西,158100 |
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| 摘 要： | 对SL(钢包喷吹Ca-Si粉 )工艺和CAB(钢包吹氩 )工艺轴承钢GCr15的K1c和ΔKth进行了测定 ,并对裂纹失稳扩展的临界尺寸和亚稳扩展的起始尺寸进行了估算。结果表明 :采用SL工艺的GCr15钢K1c和ΔKth均有所提高 ;裂纹失稳扩展和临界尺寸和亚稳扩展的起始尺寸是CAB工艺的 2倍。
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| 关 键 词： | SL和CAB工艺 GCr15钢 K1c和ΔKth 裂纹尺寸 |
| 文章编号： | 1008-8725(2002)09-0058-02 |
| 修稿时间： | 2002-06-25 |
The effect and estimation of crack size of SL technology on K1c and ΔKth of bearing steel GCr15 |
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| Abstract: | The K 1c and ΔK th of bearing steel GCr15 by SL and CAB processing were measured.The critical dimension of crack quick propagating and the initial dimension of crack sub-propagating were estimated.The results show that the K 1c and ΔK th of steel GCr15 can be improved by SL technology.The critical dimension of cracks quick propagating and the initial dimension of cracks sub-propagating of SL technology are double times than CAB technology. |
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| Keywords: | processing of SL and CAB GCr15 steel K 1c and ΔK th crack size |
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