1) retrogression and reaging
回归再时效
1.
The relationship between microstructure,electrical conductividy and stress corrosion resistance of Al-Zn-Mg-Cn alloy treated by retrogression and reaging was investigated.
研究了三种Al-Zn-Mg-Cu合金在回归再时效状态下的组织、电导率与抗应力腐蚀性能的关系。
2.
The alloys exhibit a desired combination of tensile strength and elongation after retrogression and reaging (RRA) treatment.
铝合金回归再时效(RRA)状态的超峰值时效强度的原因可以归结为,再时效使回归时产生的晶界无析出带变窄或消失,使晶界强度提高;与此同时,晶内仍然保持和获得更加弥散的组织状态及更高的析出强化效应。
3.
The results showed that the tendence to decrease in strength of the alloy became relatively slower after retrogression at 180℃ for various times and reaging at 120℃ for 24 h; With increase in retrogression temperature to 200℃ and 220℃, the strength of the alloy after retrogression and reaging decreased rapidly.
研究了回归温度(180℃,200℃,220℃)及预时效时间(12h,18h,24h)对含Ag的7055铝合金回归再时效后的强度和微观组织的影响。
2) RRA
回归再时效
1.
RRA(Regression and Re-Ageing)heat treatment can improve SCC properties of the alloy without sacrificing strength.
7000系超高强铝合金是航空航天工业的主要结构材料之一,T6(峰时效)状态下该系合金强度最高但对应力腐蚀(SCC)十分敏感,RRA(回归再时效)工艺兼顾了合金的强度和抗应力腐蚀性能,适应目前航空航天工业对结构材料的要求。
2.
The effects of retrogression reaging(RRA) heat treatment on the mechanical properties and stress corrosion cracking(SCC) resistance,and the relationship between conductivity and SCC resistance of a low frequency electromagnetic casting alloy,Al-9.
通过力学性能、电导率及拉伸应力腐蚀性能测试、扫描电镜及透射电镜观察,研究回归再时效(RRA)热处理工艺对一种新型低频电磁铸造合金Al-9。
3) aging-retrogression-reaging
时效-回归-再时效
1.
Small-angle X-ray scattering(SAXS) was used to study the precipitation behavior of the δ′ phase in 1420 alloy treated by aging-retrogression-reaging.
应用小角X射线散射(SAXS)技术研究1420合金时效-回归-再时效析出δ′相的行为。
4) retrogression and raging(RRA)
回归再时效(RRA)
补充资料：时效中止
时效中止是指在时效进行期间，由于法定事由的发生，使时效暂停进行。中止时效的原因消除之后，诉讼时效期间继续计算，它与时效中断的根本区别在于，时效中止以前所经过的期间是有效的，当时效继续进行时，中止前经过的时间要计入时效期间内，时效中止只能发生在诉讼时效期间届满前的最后六个月，时效中止的事由主要有不可抗力或其他权利人自身无法克服的障碍。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条