應(yīng)變時(shí)效對(duì)LL550級(jí)冷軋帶肋鋼筋力學(xué)性能的影響
紀(jì) 元 楊燕生 張永慶 紀(jì)德清
- 摘 要
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紀(jì) 元 （北京科技大學(xué)100083）楊燕生 張永慶 紀(jì)德清 （冶金工業(yè)部鋼鐵研究總院 北京 100081）
[提要] 冷軋帶肋鋼筋的應(yīng)變時(shí)效引起鋼筋強(qiáng)度升高，伸長率下降，給砼構(gòu)件質(zhì)量帶來不利。本文強(qiáng)調(diào)了低溫回火處理和機(jī)械消除應(yīng)力方法，對(duì)消除應(yīng)變時(shí)效有較好的效果。
[關(guān)鍵詞] 應(yīng)變時(shí)效 冷軋 帶肋鋼筋 回火Strain aging in cold rol~ed ribbed steel bars causes increase-n ultimate tensile strength and decrease in ductility, which is often detrimental to the quality of reinforced concrete structures. This paper empha-sized the effective results of stress relieving by low temperature tempering or mechanical process.
Keywords: strain aging; cold rolling; ribbed steel bars; stress relieving
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