以下为句子列表：
英文: Abstract: The microstructure of as-cast high Cr injection micro-alloying martensitic cast iron and the substructure of martensite in it have been observed under SEM and TEM.The alloying element distribution related to phase formation,as well as the variou
中文: 文摘:应用扫描电镜和透射电镜研究了喷射微合金化的铸态马氏体高铬铸铁显微组织及马氏体的亚结构，并借助X射线衍射与电子探针分析探讨了合金元素的分布与相形成的关系，以及碳化物的不同形式分枝与畸变。
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英文: As for small diameter workpiece, martensite distribution can be obtained by immediately quenching.
中文: 对于直径较细的工件，轧后立即淬火几乎可得到全部马氏体。
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英文: Consequently martensite will form in the welds and heat affected zone (HAZ) requiring proper and precise PWHT procedures.
中文: 因此在焊接部位和热影响区域（HAZ）形成马氏体就需要正确的精密的PWHT工序。
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英文: It is shown from results that increasing carburizing time further in the normal technology can not obviously deep the carburizing layer, but can cause nonmartensite microstructure at the bottom of the gear and coarse grain across the gear, these will heav
中文: 结果表明：在正常渗碳淬火工艺基础上再延长渗碳淬火1小时，齿轮渗碳层深度变化不大，但其齿根局部表面处有非马组织，且晶粒尺寸易产生异常长大现象，从而致使台架疲劳寿命明显下降。
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英文: Martensite formation is covered. The relationships between microstructure and strength, toughness, and ductility is presented in terms of the concepts developed throughout the course.
中文: 涵盖麻田散体相的形成。显微组织与强度、韧性及延性间的关系将以整个课程所学到的观念加以阐述。
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