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andyany 發(fā)表于 2015-4-15 13:09 ( P- \' ^! {6 B
我的理解是,固溶說的是高溫保持,退火強調的變溫速度。% ]; ~' O* Q( X
你這一段是你的觀點嗎?還是來自手冊或標準?
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- {" ^" ~6 f5 X* o/ z固溶是有退火效果的,爐子里出來的鋼絲組織均勻,韌性好而強度低,體現出來就是軟且延伸性好。我一直認為所謂固溶還是退火,都是針對材料組織來討論的,高溫保持或者冷卻速率等,只是一種達到目的的工藝。
9 {; C( ~: r2 {# p# ^4 m7 S) k, N我的觀點,來自該篇論文THE HEAT TREAT DOCTOR: Stainless Steels Part Two: Heat
1 ~( k# ]; @' ^& {* {7 zTreatment Techniques
! J, d3 n5 Y, [/ |這篇文章的參照如下:
2 I: P' J# J1 `% J) D% DReferences:
8 D: p) K& i$ d; o9 \# T, R; F1. Stainless Steel Handbook, Allegheny Ludlum Steel Corporation% q+ p* L/ S/ b! b! l7 d
2. The A-Z of Materials, www.azom.com.
. g w* a9 [, d& @/ s3. ASM Handbook, Vol. 4: Heat Treating, ASM International, 1991.- d- A8 }, ~/ F+ O1 k
4. Chandler, Harry editor, Heat Treater’s Guide, 2nd Edition, ASM International, 1995.
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: v. r% r) Z& d0 r' B- x以下是論文中對于退火的具體闡述部分。
, s8 @& }% v$ \% _ A5 v& N! FAnnealing7 Z( n8 |2 P. q% G# D# J
A number of different annealing methods (full, isothermal, subcritical) are commonly
" N8 ~% v% L, c# ]) ^4 z& i7 I. `used for stainless steel. Austenitic stainless steels cannot be hardened by heat
4 Y% ^: d; j6 E) X/ [' Vtreatment, but they do harden by cold working. Annealing not only allows! l# o$ S+ v' j5 L3 H
recrystallization of the work hardened grains but also places chromium carbides
& K7 ? K& R2 L& [/ Q; J% s(precipitated at grain boundaries) back into solution. Annealing can also be used for x$ N" Q: w7 X1 r B" {
homogenization of castings or welds, and to relieve stresses from cold working.2 f& P- f! D/ p3 o% x
Annealing temperatures usually are above 1900°F (1040°C), although some stainless' ^/ `0 @2 m3 A4 p( M( J
steel types may be annealed at closely controlled temperatures as low as 1850°F
6 x. z1 Q& C* A$ _# Q(1010°C) when fine grain size is desired. Time at temperature is often kept short to% J j1 N6 @1 k [( z
minimize surface oxidation and to control grain growth, which may lead to a surface" y, p* E9 m0 D( `
phenomenon called "orange peel." |
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