| 冷热循环工艺中冷热转移速率对LY12铝合金尺寸稳定性的影响 |
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| 引用本文： | 杨峰,武高辉,孙东立.冷热循环工艺中冷热转移速率对LY12铝合金尺寸稳定性的影响[J].上海金属,2003,25(1):1-3. |
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| 作者姓名： | 杨峰 武高辉 孙东立 |
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| 作者单位： | 哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨,150001 |
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| 摘 要： | 研究了冷热转移速率对LY1 2铝合金微屈服强度和残余应力的影响。结果表明 ,提高冷热转移速率易使材料中形成稳定的位错组态 ,从而有利于提高微屈服强度 ;对于圆柱和圆环试样 ,提高冷热转移速率不利于降低残余应力。分析认为 ,冷热转移速率应根据工件几何形状和尺寸进行相应调整。
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| 关 键 词： | LY12铝合金 尺寸稳定性 微屈服强度 残余应力 |
| 修稿时间： | 2002年8月6日 |
EFFECT OF THERMAL-COLD TRANSFORMATION RATE ON DIMENSIONAL STABILITY OF LY12 ALUMINIUM ALLOY IN THERMAL-COLD CYCLING PROCESS |
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| Yang Feng,Wu Gaohui,Sun Dongli.EFFECT OF THERMAL-COLD TRANSFORMATION RATE ON DIMENSIONAL STABILITY OF LY12 ALUMINIUM ALLOY IN THERMAL-COLD CYCLING PROCESS[J].Shanghai Metals,2003,25(1):1-3. |
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| Authors: | Yang Feng Wu Gaohui Sun Dongli |
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| Affiliation: | Harbin Institute of Technology |
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| Abstract: | The effects of thermal-cold transformation rate on the micro-yield strength and residual stress of LY12 aluminium alloy were studied.The results showed that raising thermal-cold transformation rate was favorable for the formation of stable dislocation structure in material,therefore,to improve the micro-yield strength.For the cylinder and ring specimens,raising thermal-cold transformation rate was not favorable for relaxing the residual stress.It was considered through analysis that the thermal-cold transformation rate should be adjusted according to the geometric shape and dimension of the work pieces. |
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| Keywords: | LY12 Aluminium Alloy Dimensional Stability Micro-Yield Strength Residual Stress |
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