对调质处理的45碳索结构钢进行了应变循环低周疲劳实验以及应力控制棘轮失效实验。
The cyclic strain low cycle fatigue and cyclic stress ratcheting failure of 45 carbon steel treated by quenching and tempering were experimentally investigated.
二次调质后，堆芯段筒体锻件产生了椭圆变形，为了不影响锻件已有性能，采用冷校形加去应力回火方法进行校正。
In order to keep the property of forging pieces which they already have, calibrating in the way of cold correcting the shape with stress release and tempering could get a better result.
冷作强化非调质钢螺栓经时效处理可以稳定组织、提高强度、降低残余应力。
Aging treatment is performed for microalloyed steel for cold hardening bolt, which can stabilize its microstructure, enhance its strength and reduce its residual stress.
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