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研究了轻武器身管钢在不同热处理条件下（调质态和高温正火加回火态）的显微组织与力学性能，提出了条形粒状贝氏体回火组织可使身管寿命大幅度提高。
The microstructure and mechanical properties of SALW steel under different heat treatment conditions (tempering and high temperature normalizing and tempered) were studied. It was proposed that the strip granular bainite tempering structure can make the life of the lifter greatly improve.