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利用Ｇｌｅｅｂｌｅ－１５００焊接热模拟试验机，在固定的峰值温度Ｔｍ＝１０５０℃，冷却时间ｔ８／５为７ｓ的条件下，研究了高温停留时间ｔｍ变化（３ｓ～３０ｓ）对低合金奥－贝球铁焊接热影响区（ＨＡＺ）组织及力学性能的影响。研究结果表明，随ｔｍ的增加，初生片状高碳马氏体尺寸增大，显微裂纹出现并逐渐增多，文中对这些现象的原因进行了分析
Using Gleeble-1500 welding simulator, the effects of high temperature residence time tm (3s ~ 30s) on the microstructures of the low alloy austenite pellets were studied under the conditions of a fixed peak temperature Tm = 1050 ℃ and a cooling time t8 / 5 of 7s. Effect of HAZ Structure and Mechanical Properties on Iron Welding. The results show that with the increase of tm, the size of primary flaky high-carbon martensite increases, and the micro-cracks appear and gradually increase. The reasons of these phenomena are analyzed