ZL114A合金凝固过程应力变化
|
摘要
以ZL114A合金为研究对象,采用铸造合金熔体凝固特性分析仪对该合金进行动态凝固应力测试,研究了铸造工艺参数对ZL114A合金应力框铸件应力影响。实验结果表明,ZL114A合金凝固过程对应力框铸件的应力状态及变化有重要影响。随着浇注温度的升高,粗杆最小应力值和最终应力值增加。冷却速率增加,粗杆最小应力值变小,最终应力值增加。与未变质试样相比,经Sr变质处理后,粗杆最小应力值减小,最终应力值增加。
The dynamic solidifying stress of ZL114 A alloy was tested by stress testing equipment in this work.The effect of casting process parameters on solidifying stress of stress-frame specimen was studied. The testing results show that the solidifying process has an important effect on the stress state and change of stress-frame specimen with ZL114 A alloy. The minimum stress value and final stress value of coarse bar in stress-frame specimen increase with increasing of pouring temperature. The minimum stress value decreases and finial stress value increases with increasing of cooling rate. Compare to the specimen with unmodified treatment,the minimum stress value decreases and finial stress value increases for the modified ZL114 A alloy with Sr.
The dynamic solidifying stress of ZL114 A alloy was tested by stress testing equipment in this work.The effect of casting process parameters on solidifying stress of stress-frame specimen was studied. The testing results show that the solidifying process has an important effect on the stress state and change of stress-frame specimen with ZL114 A alloy. The minimum stress value and final stress value of coarse bar in stress-frame specimen increase with increasing of pouring temperature. The minimum stress value decreases and finial stress value increases with increasing of cooling rate. Compare to the specimen with unmodified treatment,the minimum stress value decreases and finial stress value increases for the modified ZL114 A alloy with Sr.
引文
[1]刘晓晶,刘翠红,王欣,等.铝合金异形底盒形件预胀成形数值模拟[J].哈尔滨理工大学学报,2016,21(5):29-33,39.
[2]李缨缤,郭二军,王丽萍,等.Sm对7050铝合金铸态组织及硬度的影响[J].哈尔滨理工大学学报,2016,21(5):20-23,28.
[3]WANG J J,ZHANG Z M,PHILLION A B,et al.Alloy Development and Reheating Process Exploration of Al-Si Casting Alloys with Globular Grains for Thixoforming[J].Journal of Materials Research.2016,31(16):2482-2492.
[4]ZUO Min,LIU Xiangfa,DAI Hongshang,et al.Al-Si-P Master Alloy and Its Modification and Refinement Performance on Al-Si Alloys[J].RARE METALS,2009,28(4):412-417.
[5]王宝山,冯义成,郭育阳,等.Al-5Ti-1B-4Sr中间合金对Al-8Si合金同时细化和变质效果[J].稀有金属,2016,http://www.cnki.net/kcms/detail/11.2111.TF.20160713.1658.020.html.
[6]王姣姣,尚淑珍,路贵民,等.半固态ZL201合金本构关系研究[J].材料科学与工艺,2012,20(5):127-131.
[7]赵彦玲,车万博,铉佳平,等.铝硅合金轧制中硅晶粒应力集中数值模拟[J].哈尔滨理工大学学报,2013,18(2):81-85.
[8]段守坤,蒋祖龄,曾松岩,等.铸造合金凝固过程瞬时应力的测试[J].金属科学与工艺,1992,11(3,4):95-98.
[9]邹树梁,周雄锋,唐德文,谢宇鹏,徐守龙.新型Fe-W合金应力框铸造应力模拟及变形分析[J].铸造技术,2016,37(7):1411-1418.
[10]白清领,李宏祥,张济山,等.起始铸造速度对AA7050合金半连续铸锭应力分布的影响[J].稀有金属材料与工程,2015,44(1):158-163.
[11]宋强,孟繁芹.铸造合金动态应力测试装置改进设计[J].铸造设备研究,1988(2):45-47.
[12]孙谦,李大勇,石德全,等.新型铸造合金线收缩-应力-热裂特性综合测试系统的研制[J].铸造,2006,55(6):608-610.
[13]祖方遒,袁晓光,梁维中.铸件形成原理[M].北京:机械工业出版社,2013.
[14]王尤生,王连登,朱定一.基于热分析法研究Al-7%Si合金的凝固过程[J].机械工程材料,2013,37(11):35-39,67.
[15]FARAHANY S,OURDJINI A,IDRIS M H,et al.Computer-aided Cooling Curve Thermal Analysis of Near Eutectic Al-Si-Cu-Fe Alloy-Effect of Silicon Modifier/refiner and Solidification Conditions on the Nucleation and Growth of Dendrites[J].J Therm Anal Calorim,2013,114:705-717.
[16]熊永超.利用组织遗传性双重变质过共晶Al-Si合金的研究[D].镇江:江苏科技大学,2014.
[17]李建峰,李金山,寇宏超,等.熔体处理对A357合金枝晶搭接点的影响[J].中国有色金属学报,2006,16(3):470-475.
[2]李缨缤,郭二军,王丽萍,等.Sm对7050铝合金铸态组织及硬度的影响[J].哈尔滨理工大学学报,2016,21(5):20-23,28.
[3]WANG J J,ZHANG Z M,PHILLION A B,et al.Alloy Development and Reheating Process Exploration of Al-Si Casting Alloys with Globular Grains for Thixoforming[J].Journal of Materials Research.2016,31(16):2482-2492.
[4]ZUO Min,LIU Xiangfa,DAI Hongshang,et al.Al-Si-P Master Alloy and Its Modification and Refinement Performance on Al-Si Alloys[J].RARE METALS,2009,28(4):412-417.
[5]王宝山,冯义成,郭育阳,等.Al-5Ti-1B-4Sr中间合金对Al-8Si合金同时细化和变质效果[J].稀有金属,2016,http://www.cnki.net/kcms/detail/11.2111.TF.20160713.1658.020.html.
[6]王姣姣,尚淑珍,路贵民,等.半固态ZL201合金本构关系研究[J].材料科学与工艺,2012,20(5):127-131.
[7]赵彦玲,车万博,铉佳平,等.铝硅合金轧制中硅晶粒应力集中数值模拟[J].哈尔滨理工大学学报,2013,18(2):81-85.
[8]段守坤,蒋祖龄,曾松岩,等.铸造合金凝固过程瞬时应力的测试[J].金属科学与工艺,1992,11(3,4):95-98.
[9]邹树梁,周雄锋,唐德文,谢宇鹏,徐守龙.新型Fe-W合金应力框铸造应力模拟及变形分析[J].铸造技术,2016,37(7):1411-1418.
[10]白清领,李宏祥,张济山,等.起始铸造速度对AA7050合金半连续铸锭应力分布的影响[J].稀有金属材料与工程,2015,44(1):158-163.
[11]宋强,孟繁芹.铸造合金动态应力测试装置改进设计[J].铸造设备研究,1988(2):45-47.
[12]孙谦,李大勇,石德全,等.新型铸造合金线收缩-应力-热裂特性综合测试系统的研制[J].铸造,2006,55(6):608-610.
[13]祖方遒,袁晓光,梁维中.铸件形成原理[M].北京:机械工业出版社,2013.
[14]王尤生,王连登,朱定一.基于热分析法研究Al-7%Si合金的凝固过程[J].机械工程材料,2013,37(11):35-39,67.
[15]FARAHANY S,OURDJINI A,IDRIS M H,et al.Computer-aided Cooling Curve Thermal Analysis of Near Eutectic Al-Si-Cu-Fe Alloy-Effect of Silicon Modifier/refiner and Solidification Conditions on the Nucleation and Growth of Dendrites[J].J Therm Anal Calorim,2013,114:705-717.
[16]熊永超.利用组织遗传性双重变质过共晶Al-Si合金的研究[D].镇江:江苏科技大学,2014.
[17]李建峰,李金山,寇宏超,等.熔体处理对A357合金枝晶搭接点的影响[J].中国有色金属学报,2006,16(3):470-475.