笔者几年前撰写《金属相变概论》(共十二讲)时,由于篇幅和时间的限制,故意略去了一种正规的固态相交类型,这就是本文所要介绍的块状转变(massive transformation)。与其它大多数固态转变相比,对于块状转变的了解相对要少一些、晚一些,过去国内也很少加以介绍和研究。不过,块状转变也不是什么新东西,对这类相交的研究至少可追溯到本世纪三十年代,至今已有五十多年的历史。现在人们对于块 When I wrote the Introduction to Metal Transformation a few years ago (a total of 12 lectures), due to space and time constraints, deliberately omitted a regular type of solid-state intersection, which is the massive transformation ). Compared with most other solid-state transitions, the understanding of massive transitions is relatively less, and later, seldom introduced and studied in the past. However, massive transformation is nothing new. The study of such intersections can be traced back to at least the 1930s and has been more than 50 years old. Now people are right for the block