7050铝合金热轧板T651态热处理工艺优化

贾桂龙; 陈愿情; 韦修勋; 郑许; 谭自盟; 何克准

doi:10.15980/j.tzzz.2021.02.012

研究·合金工艺 | 浏览量 : 0 下载量: 60 CSCD: 0

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7050铝合金热轧板T651态热处理工艺优化
Optimization of T651 Heat Treatment Process for Hot-rolled 7050 Plate
2021年41卷第2期页码：185-188
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.02.012

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[1]贾桂龙,陈愿情,韦修勋,郑许,谭自盟,何克准.7050铝合金热轧板T651态热处理工艺优化[J].特种铸造及有色合金,2021,41(02):185-188.

Jia Guilong, Chen Yuanqing, Wei Xiuxun, et al. Optimization of T651 Heat Treatment Process for Hot-rolled 7050 Plate[J]. Special Casting & Nonferrous Alloys, 2021,41(2):185-188.
[1]贾桂龙,陈愿情,韦修勋,郑许,谭自盟,何克准.7050铝合金热轧板T651态热处理工艺优化[J].特种铸造及有色合金,2021,41(02):185-188. DOI： 10.15980/j.tzzz.2021.02.012.

Jia Guilong, Chen Yuanqing, Wei Xiuxun, et al. Optimization of T651 Heat Treatment Process for Hot-rolled 7050 Plate[J]. Special Casting & Nonferrous Alloys, 2021,41(2):185-188. DOI： 10.15980/j.tzzz.2021.02.012.

摘要

采用光学显微镜、扫描电镜、透射电镜、电子万能试验机等试验手段

研究了7050热轧板T651态热处理工艺优化

分析了时效态板材的断裂机制

得到了最佳的时效热处理制度。结果表明

经过475℃×30min的固溶处理后

板材晶界处第二相基本完全固溶进铝基体

固溶效果良好;经过130℃×15h的时效处理后

板材的力学性能达到最高

其抗拉强度、屈服强度、伸长率分别为603MPa、539MPa、17%。

Abstract

The optimization of T651 heat treatment process for hot-rolled 7050 plate was investigated by means of OM

SEM

TEM and electronic universal testing machine.The fracture mechanism of the aging plate was analyzed and the optimized aging heat treatment process was presented.The results indicate that the second phase at the grain boundary of the plate are all basically dissolved into the aluminum matrix after the solution treatment at 475 ℃for 30 min with the satisfied solid solution effect.After the aging treatment at 130 ℃for 15 h

the mechanical properties of the plate reach the desirable value

where the tensile strength

yield strength and elongation of the alloy reach 603 MPa

539 MPa and 17%

respectively.