【摘要】 本文研究了应变速率,温度,自然时效时间,淬火后短期人工时效处理和预拉伸应变等因素对Ly12铝合金锯齿流变的影响。结果表明:淬火后短期人工时效处理,或延长淬火后室温停留时间,均有推迟锯齿流变产生的作用,而应变速率低于1.04×10^-5秒^-1,温度低于-55℃,高于90℃都不出现锯齿流变。更多还原

【Abstract】 The effects of temperature, rate of strain, time of natural aging, artificial aging for a short-term after quenching and pretensioning strain on the serrated flow in Lyl2 alloy were studied.It is shown that the serrated flow may be delayed by short-term artificial aging or prolonging the time of natural aging after quenching.The serrated flow doesn’t take place at the rate of strain below 1.04×10-5s-1, and at the temperature below -55℃ or above 90℃.更多还原