FOR a brief period it looked like “Food Crisis 2.0”, or another “great grain robbery”—the episode in 1973 when a Russian harvest failure sent commodity prices soaring.
The wide range of investigations shown shut lower yield strength, coarse grain size and metallurgical flaws were the basic causes for the earlier failure of superalloy for turbine disk.
广泛的研究表明,屈服强度低、粗晶粒尺寸、冶金缺陷的存在是造成涡轮盘用高温合金早期失效的主要原因。
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The results show that structural irrationality of mixed grain is the main reason for structural integrity failure under low temperature environment.