volume heat treatment?
volume heat treatment怎么理解啊？ 热处理体积，一般指炉子的有效加热区域的体积 The structure of the 40Cr steel in the annealed state constitutes a ferrite--pearlite mixture having a microhardness 2.1 GPa. After volume heat treatment, the 40Cr steel has a bainite structure with individual martensitic sections.
那这句话呢，感觉不太合适啊
还有怎么说是硬度2.1GPa啊 我觉得应该这样理解，“体心立方体热处理” volume heat treatment？It's the first time to hear this idiom.
夏日凉风你能不能把整篇文章上传过来，通过整篇文章的前后贯通，或许可以得到答案 The structure of the 40Cr steel in the annealed state constitutes a ferrite--pearlite mixture having a microhardness 2.1 GPa. After volume heat treatment, the 40Cr steel has a bainite structure with individual martensitic sections.Its microhardness reaches then 5.4 GPa. In the laser-action region, a martensite--troostite structure is formed on the annealed 40Cr steel. Regions of metastable austenite were additionally observed. With increase of the distance from the surface, the fraction of the martensite decreases and that of the troostite increases. Laser treatment by a round spot ensures a 650 微米 maximum hardening zone. The depth of the hardened zone formed by a strip-shaped beam does not exceed 450 微米. These values, as well as the values of the microhardness, are governed by the attained surface temperature. microhardness 2.1 GPa是显微硬度2.1GPa，GPa是用纳米压痕仪测的硬度，是以天然金刚石100GPa为标准，其它硬度与之与相比较而测的硬度。
[ 本帖最后由 xiulirong 于 2009-6-23 07:43 编辑 ] After volume heat treatment=整体处理后或批量处理后 8楼翻译比较准确，我认为 恩 ，我也认为仅仅就是整体热处理后或者批量热处理后。因为它前文说的是未热处理的微观组织和硬度，后面是热处理过的组织和硬度 原帖由 ljx20062002 于 2009-5-20 08:54 发表 http://www.rclbbs.com/images/common/back.gif
我觉得应该这样理解，“体心立方体热处理”
从没听说过体心立方热处理，而且从晶体学来说体心立方为BCC，又热处理中的各种非平衡相没有体心立方的，只有平衡相中的低温α相和高温δ相才是体心立方的。
回复 1# 夏日凉风 的帖子
我查到一篇文章，关于焊接的，倒是有“Volume heat treatment ”of the body of a stainless steel separator by internal heating ，在abstract中，是这么描述的The volume heat treatment of welded pressure vessels made of austenitic stainless steels is a complicated technological process and it is important to take into account various properties of the steels, such as the high coefficient of heat conductivity, the temperature coefficient of heat expansion, high heat capacity, etc. The main difficulties in the heat treatment of these structures are caused by the need for using high temperature in heating and by cooling of the welded joints after holding in still air. In most cases, the heat treatment of this type is carried out by stabilising ...不知道，有没有用？
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