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前言对于焊接接头金属的开裂行为,一般都习惯于用裂缝产生的温度区间来进行分类,即所谓“热裂”或“冷裂”。随着生产的发展和人们对自然界认识的深化,用“热”或“冷”来区分裂缝已经显得笼统,且往往会引起概念上的混乱。譬如,过去将“热裂”以外的裂缝行为都统称为“冷裂”。而实际上,由于裂缝产生的机理不同、类型不同,裂缝也就不能同归一类。例如,焊缝金属中
Preface For the cracking behavior of welded joints, it is generally accustomed to classifying the temperature range produced by the cracks as the so-called “hot crack” or “cold crack”. With the development of production and the deepening of people’s understanding of nature, the distinction between cracks by “hot” or “cold” has become general and often leads to conceptual confusion. For example, in the past, “cracked cracks” were collectively referred to as “cracked cracks.” In fact, due to the different mechanism of cracks, different types, cracks can not be the same category. For example, in weld metal