理化检验-物理分册2011，Vol.47Issue(6)：361-364,4.
2A70铝合金搅拌摩擦焊接头抗拉强度测定结果的不确定度评定
Uncertainty Evaluation on Testing Results of Tensile Strength of Friction Stir Welding Joints of 2A70 Aluminium Alloy
燕翔 1张振宇 1乔凤林1
作者信息
- 1. 中国三江航天集团红阳机械厂，孝感432100
- 折叠
摘要
Abstract
The tensile strength of friction stir welding T-joints of 2A70 aluminium alloy was tested according to GB/T 2651 - 2008 "Method of Tensile Test for Welded Joint", and uncertainty of the tensile strength testing results was evaluated. The results show that the expanded uncertainty and relative expanded uncertainty of tensile strength of the T-joints were 14 Mpa and 3. 8% respectively, when the confidence level was 95% and coverage factor was 2. Therefore, the uncertainty report can be expressed as follow; Rm = (370+14) Mpa, υ=81, k=2.关键词
2A70铝合金；搅拌摩擦焊；T型接头；抗拉强度；不确定度评定Key words
2A70 aluminum alloy/ friction stir welding/T-joint/ tensile strength/ uncertainty evaluation分类
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燕翔,张振宇,乔凤林..2A70铝合金搅拌摩擦焊接头抗拉强度测定结果的不确定度评定[J].理化检验-物理分册,2011,47(6):361-364,4.
