Relationship between Mechanical Properties and Cold-rolling True Strain of Al-0.2Sc-0.02Zr-0.02Yb Alloys

Wang Yu; Cai Bin; Xie Kun; Song Tengfei; Liu Yang

doi:10.15980/j.tzzz.2018.07.019

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Relationship between Mechanical Properties and Cold-rolling True Strain of Al-0.2Sc-0.02Zr-0.02Yb Alloys
Vol. 38, Issue 7, Pages: 764-768(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.07.019

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[1]王裕,蔡彬,谢昆,宋腾飞,刘洋.Al-0.2Sc-0.02Zr-0.02Yb合金的力学性能和冷轧量的关系[J].特种铸造及有色合金,2018,38(07):764-768.

Wang Yu, Cai Bin, Xie Kun, et al. Relationship between Mechanical Properties and Cold-rolling True Strain of Al-0.2Sc-0.02Zr-0.02Yb Alloys. [J]. Special Casting & Nonferrous Alloys 38(7):764-768(2018)
[1]王裕,蔡彬,谢昆,宋腾飞,刘洋.Al-0.2Sc-0.02Zr-0.02Yb合金的力学性能和冷轧量的关系[J].特种铸造及有色合金,2018,38(07):764-768. DOI： 10.15980/j.tzzz.2018.07.019.

Wang Yu, Cai Bin, Xie Kun, et al. Relationship between Mechanical Properties and Cold-rolling True Strain of Al-0.2Sc-0.02Zr-0.02Yb Alloys. [J]. Special Casting & Nonferrous Alloys 38(7):764-768(2018) DOI： 10.15980/j.tzzz.2018.07.019.

摘要

研究了不同预处理（均匀化、峰时效和热挤）和冷轧真应变对Al-0.2Sc-0.02Zr-0.02Yb合金力学性能的影响。结果发现

冷轧并不改变合金峰时效温度（330℃）。3种预处理+冷轧+时效合金的力学性能均随冷轧真应变增加而增加

近似满足Hollomon公式

并拟合得到了相应的强化系数和强化指数。对3种预处理+冷轧+峰时效合金而言

均匀化预处理后强化指数（n）最大

热挤次之

峰时效预处理的最低。而对均匀化+冷轧+时效合金

随着时效温度升高

强化指数先增大后减小

在280℃达到最大值。

Abstract

The effects of different pretreatments（homogenization

peak ageing and hot extrusion）and cold-rolling true strain on the mechanical properties of Al-0.2 Sc-0.02 Zr-0.02 Yb alloy were investigated.The results reveal that the peak aging temperature（330℃）is independent on the cold rolling.The mechanical properties of three kinds of pretreating+cold rolling+ageing alloys are increased with increasing in the cold-rolling true strain

which approximately follows the Hollomon’s formula.The corresponding strengthening coefficient K and strengthening exponent n canbe obtained obtained by fitting method.Among the three kinds of pretreatments+cold-rolling+peak ageing alloys

the nis the maximum for homogenization

secondary for hot extrusion

and the minimum for peak aging.For the homogenization+cold rolling+ageing alloys

the nis increased firstly and then decreased with increasing in ageing temperature

and the maximumnis presented at 280 ℃.