表面机械多重碾磨对2024铝合金力学性能的影响

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	表面机械多重碾磨对2024铝合金力学性能的影响
其他题名	Effects of Surface Machinery Multi-grinding on Mechanical Properties of 2024 Aluminum Alloy
	赵云龙 1; 王涛 2; 杨志卿 3
	2018
发表期刊	特种铸造及有色合金
ISSN	1001-2249
卷号	38.0 期号:012 页码:1370-1374
摘要	利用表面机械多重碾磨(MMGS)装置对2024铝合金薄板表面进行了两道次的表面微纳米化加工,将加工后的材料进行XRD、力学性能测试、TEM和HRTEM表征。结果表明,MMGS是一种对金属材料表面强化行之有效的表面塑性变形方法。MMGS处理两道次后板料的屈服强度可达475MPa,伸长率可达15%;导致MMGS试样具有较高屈服强度和抗拉强度的原因是试样内部高密度的位错和晶粒的细化;从硬化率指标分析可知,MMGS试样在真应变超过O.018之后的硬化率在大范围内均低于T351试样,且粗大S相在强塑性变形过程中易产生裂纹,因而最终导致MMGS处理后试样的伸长率略低于T351试样。
其他摘要	Machinery Multi-Grinding of the surface (MMGS)device was used to perform two passes of plastic deformation on the plate of 2024Al alloys,and XRD,the mechanical property test,TEM and HRTEM of the grinned material were performed.The results show that MMGS is an effective plastic deformation method for the commercial 2024 aluminum alloys.Yield strength of the grinned samples can reach 475MPa and the elongation can reach 15%,which are attributed to a large amount of dislocations and grains refinement inside the sample.The MMGS samples and the T351 state samples are analyzed using the work hardening rate.The work hardening rate of the T351 state samples is much higher than that of the MMGS samples in a large range of the whole strain after the ture strain more than 0.018,besides the cracks are generated when the coarse S phase were suffered the strong plastic deformation, which ultimately leads to the elongation of the MMGS samples slightly lower than that of the T351 state samples.
关键词	表面机械多重碾磨 2024铝合金梯度结构微纳米化
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6404515
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/154324
专题	中国科学院金属研究所
作者单位	1.钦州学院 2.辽宁装备制造职业技术学院 3.中国科学院金属研究所
推荐引用方式 GB/T 7714	赵云龙,王涛,杨志卿. 表面机械多重碾磨对2024铝合金力学性能的影响[J]. 特种铸造及有色合金,2018,38.0(012):1370-1374.
APA	赵云龙,王涛,&杨志卿.(2018).表面机械多重碾磨对2024铝合金力学性能的影响.特种铸造及有色合金,38.0(012),1370-1374.
MLA	赵云龙,et al."表面机械多重碾磨对2024铝合金力学性能的影响".特种铸造及有色合金 38.0.012(2018):1370-1374.